ID

VAR-202012-1279

CVE

CVE-2020-8286

TITLE

curl  Vulnerability in Certificate Verification

DESCRIPTION

curl 7.41.0 through 7.73.0 is vulnerable to an improper check for certificate revocation due to insufficient verification of the OCSP response. curl Contains a certificate validation vulnerability.Information may be tampered with. HAXX libcurl is an open source client-side URL transfer library developed by Haxx (HAXX) in Sweden. The product supports protocols such as FTP, SFTP, TFTP and HTTP. A security vulnerability exists in libcurl that could be exploited by an attacker to read or write data in a session by acting as a man-in-the-middle through low-level OCSP authentication on libcurl. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - ------------------------------------------------------------------------- Debian Security Advisory DSA-4881-1 security@debian.org https://www.debian.org/security/ Alessandro Ghedini March 30, 2021 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : curl CVE ID : CVE-2020-8169 CVE-2020-8177 CVE-2020-8231 CVE-2020-8284 CVE-2020-8285 CVE-2020-8286 CVE-2021-22876 CVE-2021-22890 Debian Bug : 965280 965281 968831 977161 977162 977163 Multiple vulnerabilities were discovered in cURL, an URL transfer library: CVE-2020-8169 Marek Szlagor reported that libcurl could be tricked into prepending a part of the password to the host name before it resolves it, potentially leaking the partial password over the network and to the DNS server(s). CVE-2020-8177 sn reported that curl could be tricked by a malicious server into overwriting a local file when using th -J (--remote-header-name) and -i (--include) options in the same command line. CVE-2020-8231 Marc Aldorasi reported that libcurl might use the wrong connection when an application using libcurl's multi API sets the option CURLOPT_CONNECT_ONLY, which could lead to information leaks. CVE-2020-8284 Varnavas Papaioannou reported that a malicious server could use the PASV response to trick curl into connecting back to an arbitrary IP address and port, potentially making curl extract information about services that are otherwise private and not disclosed. CVE-2020-8285 xnynx reported that libcurl could run out of stack space when using tha FTP wildcard matching functionality (CURLOPT_CHUNK_BGN_FUNCTION). CVE-2020-8286 It was reported that libcurl didn't verify that an OCSP response actually matches the certificate it is intended to. CVE-2021-22876 Viktor Szakats reported that libcurl does not strip off user credentials from the URL when automatically populating the Referer HTTP request header field in outgoing HTTP requests. CVE-2021-22890 Mingtao Yang reported that, when using an HTTPS proxy and TLS 1.3, libcurl could confuse session tickets arriving from the HTTPS proxy as if they arrived from the remote server instead. This could allow an HTTPS proxy to trick libcurl into using the wrong session ticket for the host and thereby circumvent the server TLS certificate check. For the stable distribution (buster), these problems have been fixed in version 7.64.0-4+deb10u2. We recommend that you upgrade your curl packages. Bugs fixed (https://bugzilla.redhat.com/): 1918750 - CVE-2021-3114 golang: crypto/elliptic: incorrect operations on the P-224 curve 1945703 - "Guest OS Info" availability in VMI describe is flaky 1958816 - [2.6.z] KubeMacPool fails to start due to OOM likely caused by a high number of Pods running in the cluster 1963275 - migration controller null pointer dereference 1965099 - Live Migration double handoff to virt-handler causes connection failures 1965181 - CDI importer doesn't report AwaitingVDDK like it used to 1967086 - Cloning DataVolumes between namespaces fails while creating cdi-upload pod 1967887 - [2.6.6] nmstate is not progressing on a node and not configuring vlan filtering that causes an outage for VMs 1969756 - Windows VMs fail to start on air-gapped environments 1970372 - Virt-handler fails to verify container-disk 1973227 - segfault in virt-controller during pdb deletion 1974084 - 2.6.6 containers 1975212 - No Virtual Machine Templates Found [EDIT - all templates are marked as depracted] 1975727 - [Regression][VMIO][Warm] The third precopy does not end in warm migration 1977756 - [2.6.z] PVC keeps in pending when using hostpath-provisioner 1982760 - [v2v] no kind VirtualMachine is registered for version \"kubevirt.io/v1\" i... 1986989 - OpenShift Virtualization 2.6.z cannot be upgraded to 4.8.0 initially deployed starting with <= 4.8 5. Description: Red Hat Advanced Cluster Management for Kubernetes 2.2.4 images Red Hat Advanced Cluster Management for Kubernetes provides the capabilities to address common challenges that administrators and site reliability engineers face as they work across a range of public and private cloud environments. Clusters and applications are all visible and managed from a single console—with security policy built in. See the following Release Notes documentation, which will be updated shortly for this release, for additional details about this release: https://access.redhat.com/documentation/en-us/red_hat_advanced_cluster_mana gement_for_kubernetes/2.2/html/release_notes/ Security fixes: * redisgraph-tls: redis: integer overflow when configurable limit for maximum supported bulk input size is too big on 32-bit platforms (CVE-2021-21309) * console-header-container: nodejs-netmask: improper input validation of octal input data (CVE-2021-28092) * console-container: nodejs-is-svg: ReDoS via malicious string (CVE-2021-28918) Bug fixes: * RHACM 2.2.4 images (BZ# 1957254) * Enabling observability for OpenShift Container Storage with RHACM 2.2 on OCP 4.7 (BZ#1950832) * ACM Operator should support using the default route TLS (BZ# 1955270) * The scrolling bar for search filter does not work properly (BZ# 1956852) * Limits on Length of MultiClusterObservability Resource Name (BZ# 1959426) * The proxy setup in install-config.yaml is not worked when IPI installing with RHACM (BZ# 1960181) * Unable to make SSH connection to a Bitbucket server (BZ# 1966513) * Observability Thanos store shard crashing - cannot unmarshall DNS message (BZ# 1967890) 3. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. Bugs fixed (https://bugzilla.redhat.com/): 1932634 - CVE-2021-21309 redis: integer overflow when configurable limit for maximum supported bulk input size is too big on 32-bit platforms 1939103 - CVE-2021-28092 nodejs-is-svg: ReDoS via malicious string 1944827 - CVE-2021-28918 nodejs-netmask: improper input validation of octal input data 1950832 - Enabling observability for OpenShift Container Storage with RHACM 2.2 on OCP 4.7 1952150 - [DDF] It would be great to see all the options available for the bucket configuration and which attributes are mandatory 1954506 - [DDF] Table does not contain data about 20 clusters. Now it's difficult to estimate CPU usage with larger clusters 1954535 - Reinstall Submariner - No endpoints found on one cluster 1955270 - ACM Operator should support using the default route TLS 1956852 - The scrolling bar for search filter does not work properly 1957254 - RHACM 2.2.4 images 1959426 - Limits on Length of MultiClusterObservability Resource Name 1960181 - The proxy setup in install-config.yaml is not worked when IPI installing with RHACM. 1963128 - [DDF] Please rename this to "Amazon Elastic Kubernetes Service" 1966513 - Unable to make SSH connection to a Bitbucket server 1967357 - [DDF] When I clicked on this yaml, I get a HTTP 404 error. 1967890 - Observability Thanos store shard crashing - cannot unmarshal DNS message 5. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: Red Hat JBoss Core Services Apache HTTP Server 2.4.37 SP8 security update Advisory ID: RHSA-2021:2471-01 Product: Red Hat JBoss Core Services Advisory URL: https://access.redhat.com/errata/RHSA-2021:2471 Issue date: 2021-06-17 CVE Names: CVE-2020-8169 CVE-2020-8284 CVE-2020-8285 CVE-2020-8286 CVE-2021-22876 CVE-2021-22890 CVE-2021-22901 CVE-2021-31618 ===================================================================== 1. Summary: Red Hat JBoss Core Services Pack Apache Server 2.4.37 Service Pack 8 zip release for RHEL 7, RHEL 8 and Microsoft Windows is available. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. 2. Description: Red Hat JBoss Core Services is a set of supplementary software for Red Hat JBoss middleware products. This software, such as Apache HTTP Server, is common to multiple JBoss middleware products, and is packaged under Red Hat JBoss Core Services to allow for faster distribution of updates, and for a more consistent update experience. This release adds the new Apache HTTP Server 2.4.37 Service Pack 8 packages that are part of the JBoss Core Services offering. This release serves as a replacement for Red Hat JBoss Core Services Pack Apache Server 2.4.37 Service Pack 7 and includes bug fixes and enhancements. Refer to the Release Notes for information on the most significant bug fixes and enhancements included in this release. Security Fix(es): * curl: Use-after-free in TLS session handling when using OpenSSL TLS backend (CVE-2021-22901) * httpd: NULL pointer dereference on specially crafted HTTP/2 request (CVE-2021-31618) * libcurl: partial password leak over DNS on HTTP redirect (CVE-2020-8169) * curl: FTP PASV command response can cause curl to connect to arbitrary host (CVE-2020-8284) * curl: Malicious FTP server can trigger stack overflow when CURLOPT_CHUNK_BGN_FUNCTION is used (CVE-2020-8285) * curl: Inferior OCSP verification (CVE-2020-8286) * curl: Leak of authentication credentials in URL via automatic Referer (CVE-2021-22876) * curl: TLS 1.3 session ticket mix-up with HTTPS proxy host (CVE-2021-22890) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. 3. Solution: Before applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on. The References section of this erratum contains a download link for the update. You must be logged in to download the update. 4. Bugs fixed (https://bugzilla.redhat.com/): 1847916 - CVE-2020-8169 libcurl: partial password leak over DNS on HTTP redirect 1902667 - CVE-2020-8284 curl: FTP PASV command response can cause curl to connect to arbitrary host 1902687 - CVE-2020-8285 curl: Malicious FTP server can trigger stack overflow when CURLOPT_CHUNK_BGN_FUNCTION is used 1906096 - CVE-2020-8286 curl: Inferior OCSP verification 1941964 - CVE-2021-22876 curl: Leak of authentication credentials in URL via automatic Referer 1941965 - CVE-2021-22890 curl: TLS 1.3 session ticket mix-up with HTTPS proxy host 1963146 - CVE-2021-22901 curl: Use-after-free in TLS session handling when using OpenSSL TLS backend 1968013 - CVE-2021-31618 httpd: NULL pointer dereference on specially crafted HTTP/2 request 5. References: https://access.redhat.com/security/cve/CVE-2020-8169 https://access.redhat.com/security/cve/CVE-2020-8284 https://access.redhat.com/security/cve/CVE-2020-8285 https://access.redhat.com/security/cve/CVE-2020-8286 https://access.redhat.com/security/cve/CVE-2021-22876 https://access.redhat.com/security/cve/CVE-2021-22890 https://access.redhat.com/security/cve/CVE-2021-22901 https://access.redhat.com/security/cve/CVE-2021-31618 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=core.service.apachehttp&downloadType=securityPatches&version=2.4.37 https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=core.service.openssl&downloadType=securityPatches&version=1.1.1g https://access.redhat.com/documentation/en-us/red_hat_jboss_core_services/2.4.37/ 6. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2021 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBYMszstzjgjWX9erEAQgW2Q//cZOMa4KOvz7KejR03sHk7m8aMHDRdPDe Ki6PTe99phprmuXNPOCPGFuWDXbdpAlyEx3Elt3Ah+vmpV+K7ThwXGXJkGwb6mol 2xAFvcwxxO6GNsCl8gYW+JTG+5HYLZ/U4q3lgHId9qfzmuRRg0zwOuwZC7y7R6kP 3H1o1WRiIKEA1oHCh3f3OizTrkOcBZsWINsJ2ggW+ZqVeve4PJH55F3JwCJbIuhd kUhe1QQjiANWq4m/+QkTRtIYzahqK+lIubpoU5P+sFosc7ASUGe29ZPC9LsfY4hx 61bSxXbxTv2wcBaUrg/TAxRplQdHRbZe8s8eWhMtDoNHRqujYOiKHUnBgdoY6oLd 3gfAGI3w2NnWRDodGDGXfuDu6hncAukvxqOO/tOnRd2n7/R52ewGCsNKvsf/OHRG 1X7UeD4DJvXiqBNOtPaqOjR3q7xdO5MhYtkvh/8mzvhx5X/CojUWRWmtSdJDhpvQ POl+hJjFqEFTUJk/VGDJ7HsIs5OqeoV0pURP3VvYyBF75xp3aYI8Gfb1wLoqXmp2 iFhSTskqEc42iMvG/Ks5Rb1wQLrJ4RNgxunGofmNQusjgN406aAqvE79a6JUmt/z 7Z6i8Tvy9PGgNtbnalyxbikpA8Qcoxoij2pbIcSNIJXW+mA74QtI3AC4+4m0V90H butyhmDY1nQ= =gsJD -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce . Solution: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the updated packages, the httpd daemon will be restarted automatically. Applications using the APR libraries, such as httpd, must be restarted for this update to take effect. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. Bugs fixed (https://bugzilla.redhat.com/): 1897635 - CVE-2020-28362 golang: math/big: panic during recursive division of very large numbers 1918750 - CVE-2021-3114 golang: crypto/elliptic: incorrect operations on the P-224 curve 5. JIRA issues fixed (https://issues.jboss.org/): TRACING-1725 - Elasticsearch operator reports x509 errors communicating with ElasticSearch in OpenShift Service Mesh project 6. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 APPLE-SA-2021-04-26-3 Security Update 2021-002 Catalina Security Update 2021-002 Catalina addresses the following issues. Information about the security content is also available at https://support.apple.com/HT212326. APFS Available for: macOS Catalina Impact: A local user may be able to read arbitrary files Description: The issue was addressed with improved permissions logic. CVE-2021-1797: Thomas Tempelmann Archive Utility Available for: macOS Catalina Impact: A malicious application may bypass Gatekeeper checks Description: A logic issue was addressed with improved state management. CVE-2021-1810: an anonymous researcher Audio Available for: macOS Catalina Impact: An application may be able to read restricted memory Description: A memory corruption issue was addressed with improved validation. CVE-2021-1808: JunDong Xie of Ant Security Light-Year Lab CFNetwork Available for: macOS Catalina Impact: Processing maliciously crafted web content may disclose sensitive user information Description: A memory initialization issue was addressed with improved memory handling. CVE-2021-1857: an anonymous researcher CoreAudio Available for: macOS Catalina Impact: A malicious application may be able to read restricted memory Description: A memory corruption issue was addressed with improved validation. CVE-2021-1809: JunDong Xie of Ant Security Light-Year Lab CoreGraphics Available for: macOS Catalina Impact: Opening a maliciously crafted file may lead to unexpected application termination or arbitrary code execution Description: A memory corruption issue was addressed with improved validation. CVE-2021-1847: Xuwei Liu of Purdue University CoreText Available for: macOS Catalina Impact: Processing a maliciously crafted font may result in the disclosure of process memory Description: A logic issue was addressed with improved state management. CVE-2021-1811: Xingwei Lin of Ant Security Light-Year Lab curl Available for: macOS Catalina Impact: A remote attacker may be able to cause a denial of service Description: A buffer overflow was addressed with improved input validation. CVE-2020-8285: xnynx curl Available for: macOS Catalina Impact: An attacker may provide a fraudulent OCSP response that would appear valid Description: This issue was addressed with improved checks. CVE-2020-8286: an anonymous researcher DiskArbitration Available for: macOS Catalina Impact: A malicious application may be able to modify protected parts of the file system Description: A permissions issue existed in DiskArbitration. This was addressed with additional ownership checks. CVE-2021-1784: Mikko Kenttälä (@Turmio_) of SensorFu, Csaba Fitzl (@theevilbit) of Offensive Security, and an anonymous researcher FontParser Available for: macOS Catalina Impact: Processing a maliciously crafted font file may lead to arbitrary code execution Description: An out-of-bounds read was addressed with improved input validation. CVE-2021-1881: Hou JingYi (@hjy79425575) of Qihoo 360, an anonymous researcher, Xingwei Lin of Ant Security Light-Year Lab, and Mickey Jin of Trend Micro FontParser Available for: macOS Catalina Impact: Processing a maliciously crafted font file may lead to arbitrary code execution Description: A logic issue was addressed with improved state management. CVE-2020-27942: an anonymous researcher Foundation Available for: macOS Catalina Impact: A malicious application may be able to gain root privileges Description: A validation issue was addressed with improved logic. CVE-2021-1813: Cees Elzinga Foundation Available for: macOS Catalina Impact: An application may be able to gain elevated privileges Description: A memory corruption issue was addressed with improved validation. CVE-2021-1882: Gabe Kirkpatrick (@gabe_k) ImageIO Available for: macOS Catalina Impact: Processing a maliciously crafted image may lead to arbitrary code execution Description: This issue was addressed with improved checks. CVE-2021-1843: Ye Zhang of Baidu Security Intel Graphics Driver Available for: macOS Catalina Impact: A malicious application may be able to execute arbitrary code with kernel privileges Description: An out-of-bounds write issue was addressed with improved bounds checking. CVE-2021-1834: ABC Research s.r.o. working with Trend Micro Zero Day Initiative Kernel Available for: macOS Catalina Impact: A malicious application may be able to disclose kernel memory Description: A memory initialization issue was addressed with improved memory handling. CVE-2021-1860: @0xalsr Kernel Available for: macOS Catalina Impact: An application may be able to execute arbitrary code with kernel privileges Description: A logic issue was addressed with improved state management. CVE-2021-1851: @0xalsr Kernel Available for: macOS Catalina Impact: A local attacker may be able to elevate their privileges Description: A memory corruption issue was addressed with improved validation. CVE-2021-1840: Zuozhi Fan (@pattern_F_) of Ant Group Tianqiong Security Lab libxpc Available for: macOS Catalina Impact: A malicious application may be able to gain root privileges Description: A race condition was addressed with additional validation. CVE-2021-30652: James Hutchins libxslt Available for: macOS Catalina Impact: Processing a maliciously crafted file may lead to heap corruption Description: A double free issue was addressed with improved memory management. CVE-2021-1875: Found by OSS-Fuzz Login Window Available for: macOS Catalina Impact: A malicious application with root privileges may be able to access private information Description: This issue was addressed with improved entitlements. CVE-2021-1824: Wojciech Reguła (@_r3ggi) of SecuRing NSRemoteView Available for: macOS Catalina Impact: Processing maliciously crafted web content may lead to arbitrary code execution Description: A use after free issue was addressed with improved memory management. CVE-2021-1876: Matthew Denton of Google Chrome Preferences Available for: macOS Catalina Impact: A local user may be able to modify protected parts of the file system Description: A parsing issue in the handling of directory paths was addressed with improved path validation. CVE-2021-1739: Zhipeng Huo (@R3dF09) and Yuebin Sun (@yuebinsun2020) of Tencent Security Xuanwu Lab (xlab.tencent.com) CVE-2021-1740: Zhipeng Huo (@R3dF09) and Yuebin Sun (@yuebinsun2020) of Tencent Security Xuanwu Lab (xlab.tencent.com) smbx Available for: macOS Catalina Impact: An attacker in a privileged network position may be able to leak sensitive user information Description: An integer overflow was addressed with improved input validation. CVE-2021-1878: Aleksandar Nikolic of Cisco Talos (talosintelligence.com) Tailspin Available for: macOS Catalina Impact: A local attacker may be able to elevate their privileges Description: A logic issue was addressed with improved state management. CVE-2021-1868: Tim Michaud of Zoom Communications tcpdump Available for: macOS Catalina Impact: A remote attacker may be able to cause a denial of service Description: This issue was addressed with improved checks. CVE-2020-8037: an anonymous researcher Time Machine Available for: macOS Catalina Impact: A local attacker may be able to elevate their privileges Description: The issue was addressed with improved permissions logic. CVE-2021-1839: Tim Michaud(@TimGMichaud) of Zoom Video Communications and Gary Nield of ECSC Group plc Wi-Fi Available for: macOS Catalina Impact: An application may be able to cause unexpected system termination or write kernel memory Description: A memory corruption issue was addressed with improved validation. CVE-2021-1828: Zuozhi Fan (@pattern_F_) of Ant Group Tianqiong Security Lab wifivelocityd Available for: macOS Catalina Impact: An application may be able to execute arbitrary code with system privileges Description: The issue was addressed with improved permissions logic. CVE-2020-3838: Dayton Pidhirney (@_watbulb) Windows Server Available for: macOS Catalina Impact: A malicious application may be able to unexpectedly leak a user's credentials from secure text fields Description: An API issue in Accessibility TCC permissions was addressed with improved state management. CVE-2021-1873: an anonymous researcher Installation note: This update may be obtained from the Mac App Store or Apple's Software Downloads web site: https://support.apple.com/downloads/ Information will also be posted to the Apple Security Updates web site: https://support.apple.com/kb/HT201222 This message is signed with Apple's Product Security PGP key, and details are available at: https://www.apple.com/support/security/pgp/ -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEbURczHs1TP07VIfuZcsbuWJ6jjAFAmCHO1YACgkQZcsbuWJ6 jjBNDA//cITX6Bzw+4rkTd58ZQ+2P60B30bvuMWuNmXDEyIHZz0ZMDX7Wymm9SBC GLQ9mh9XY10/11NjdAiHZIs8BTs18CcOpjODbRTuF7d/plL6eUcsSLVbkC9hoyJF IOAEawLoqye7f+hlsCbC00NzLlAtsR5PjkqwCTGjGBw8G8qPbLFvh72Qwagr/G05 zeEg3fRM+lecFHUZzXVkdW2WiQ6aO2ejKkhdhSCATnj+xZF1wEz/Wjb3oLQ3qOvq i8lQg7Vcr64uF0HGCKPBmbINc7yM/ChZjs5oEyxdMc1/rxvU30nSvEc17LsVMIvM ZJxnjhBjcTi36gL8pM8Lfh57+AG0L/EwVe6onjC7yBneEbfk5dUYuglcAB2uJwgj V47KS0+5X9bwi33JmI/OpaaVRVCqJBO+iiZQnuQFAFFcC/F2fu6g8uKg8Vo/kg/I d4ypBrAsybJKZvMUVKBAWb9tS0JlVKpYurl89n9F2N47BkotP4AwDsmTTFZguiG+ sfRL+uAB2xy46VvLTNx71HeFTltc7wmlZOORx7MJ4bcYI/ibJbOq612Q7GyiADeP cKKpi4snPxv0mOiIsc4dE91RiUWfAUBmw+469EH3IWFQYMpuDtCmQPlHkrTmYu2K gn1q0sLR6LAX/l9uQxGaSarW2ZXmrj4/dpsfmnRYS8zDDQw/0JQ= =c954 -----END PGP SIGNATURE----- . Security Fix(es): * golang: crypto/tls: certificate of wrong type is causing TLS client to panic (CVE-2021-34558) * golang: net: lookup functions may return invalid host names (CVE-2021-33195) * golang: net/http/httputil: ReverseProxy forwards connection headers if first one is empty (CVE-2021-33197) * golang: match/big.Rat: may cause a panic or an unrecoverable fatal error if passed inputs with very large exponents (CVE-2021-33198) * golang: encoding/xml: infinite loop when using xml.NewTokenDecoder with a custom TokenReader (CVE-2021-27918) * golang: net/http: panic in ReadRequest and ReadResponse when reading a very large header (CVE-2021-31525) * golang: archive/zip: malformed archive may cause panic or memory exhaustion (CVE-2021-33196) It was found that the CVE-2021-27918, CVE-2021-31525 and CVE-2021-33196 have been incorrectly mentioned as fixed in RHSA for Serverless client kn 1.16.0. This has been fixed (CVE-2021-3703). For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Bugs fixed (https://bugzilla.redhat.com/): 1983596 - CVE-2021-34558 golang: crypto/tls: certificate of wrong type is causing TLS client to panic 1983651 - Release of OpenShift Serverless Serving 1.17.0 1983654 - Release of OpenShift Serverless Eventing 1.17.0 1989564 - CVE-2021-33195 golang: net: lookup functions may return invalid host names 1989570 - CVE-2021-33197 golang: net/http/httputil: ReverseProxy forwards connection headers if first one is empty 1989575 - CVE-2021-33198 golang: math/big.Rat: may cause a panic or an unrecoverable fatal error if passed inputs with very large exponents 1992955 - CVE-2021-3703 serverless: incomplete fix for CVE-2021-27918 / CVE-2021-31525 / CVE-2021-33196 5

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

TYPE

overflow

EXPLOIT AVAILABILITY

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Red Hat

SOURCES

LAST UPDATE DATE

2026-03-21T21:17:21.827000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE