ID

VAR-202102-1488

CVE

CVE-2021-23841

TITLE

OpenSSL  In  NULL  Pointer dereference vulnerability

DESCRIPTION

The OpenSSL public API function X509_issuer_and_serial_hash() attempts to create a unique hash value based on the issuer and serial number data contained within an X509 certificate. However it fails to correctly handle any errors that may occur while parsing the issuer field (which might occur if the issuer field is maliciously constructed). This may subsequently result in a NULL pointer deref and a crash leading to a potential denial of service attack. The function X509_issuer_and_serial_hash() is never directly called by OpenSSL itself so applications are only vulnerable if they use this function directly and they use it on certificates that may have been obtained from untrusted sources. OpenSSL versions 1.1.1i and below are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1j. OpenSSL versions 1.0.2x and below are affected by this issue. However OpenSSL 1.0.2 is out of support and no longer receiving public updates. Premium support customers of OpenSSL 1.0.2 should upgrade to 1.0.2y. Other users should upgrade to 1.1.1j. Fixed in OpenSSL 1.1.1j (Affected 1.1.1-1.1.1i). Fixed in OpenSSL 1.0.2y (Affected 1.0.2-1.0.2x). Please keep an eye on CNNVD or manufacturer announcements. Additional details can be found in the upstream advisories https://www.openssl.org/news/secadv/20191206.txt and https://www.openssl.org/news/secadv/20210216.txt . For the stable distribution (buster), these problems have been fixed in version 1.1.1d-0+deb10u5. Bugs fixed (https://bugzilla.redhat.com/): 2030932 - CVE-2021-44228 log4j-core: Remote code execution in Log4j 2.x when logs contain an attacker-controlled string value 5. Relevant releases/architectures: Red Hat Enterprise Linux AppStream (v. 8) - noarch 3. Description: EDK (Embedded Development Kit) is a project to enable UEFI support for Virtual Machines. This package contains a sample 64-bit UEFI firmware for QEMU and KVM. The following packages have been upgraded to a later upstream version: edk2 (20210527gite1999b264f1f). (BZ#1846481, BZ#1938238) Security Fix(es): * openssl: integer overflow in CipherUpdate (CVE-2021-23840) * openssl: NULL pointer dereference in X509_issuer_and_serial_hash() (CVE-2021-23841) 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. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.5 Release Notes linked from the References section. 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 5. Bugs fixed (https://bugzilla.redhat.com/): 1930310 - CVE-2021-23841 openssl: NULL pointer dereference in X509_issuer_and_serial_hash() 1930324 - CVE-2021-23840 openssl: integer overflow in CipherUpdate 1937564 - [RFE] support VCPU hot unplug in OVMF/edk2 1938238 - rebase edk2 to edk2-stable202105 for RHEL-8.5 1938257 - refresh OpenSSL bundled with edk2 for RHEL-8.5 1956837 - Additional build of edk2 without SMM (dual build / sub-package) for SEV-ES 1988762 - edk2 does not ignore PMBR protective record BootIndicator as required by UEFI spec 6. Package List: Red Hat Enterprise Linux AppStream (v. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 APPLE-SA-2021-05-25-5 Safari 14.1.1 Safari 14.1.1 addresses the following issues. WebKit Available for: macOS Catalina and macOS Mojave Impact: Processing maliciously crafted web content may lead to arbitrary code execution Description: Multiple memory corruption issues were addressed with improved memory handling. CVE-2021-30749: an anonymous researcher and mipu94 of SEFCOM lab, ASU. working with Trend Micro Zero Day Initiative CVE-2021-30734: Jack Dates of RET2 Systems, Inc. (@ret2systems) working with Trend Micro Zero Day Initiative WebKit Available for: macOS Catalina and macOS Mojave Impact: Processing maliciously crafted web content may lead to universal cross site scripting Description: A cross-origin issue with iframe elements was addressed with improved tracking of security origins. CVE-2021-30744: Dan Hite of jsontop WebKit Available for: macOS Catalina and macOS Mojave Impact: A malicious website may be able to access restricted ports on arbitrary servers Description: A logic issue was addressed with improved restrictions. CVE-2021-30720: David Schütz (@xdavidhu) WebKit Available for: macOS Catalina and macOS Mojave Impact: A malicious application may be able to leak sensitive user information Description: A logic issue was addressed with improved restrictions. CVE-2021-30682: an anonymous researcher and 1lastBr3ath WebKit Available for: macOS Catalina and macOS Mojave 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-2021-21779: Marcin Towalski of Cisco Talos WebKit Available for: macOS Catalina and macOS Mojave Impact: Processing maliciously crafted web content may lead to universal cross site scripting Description: A logic issue was addressed with improved state management. CVE-2021-30689: an anonymous researcher WebKit Available for: macOS Catalina and macOS Mojave Impact: Processing maliciously crafted web content may lead to arbitrary code execution Description: An integer overflow was addressed with improved input validation. CVE-2021-30663: an anonymous researcher WebRTC Available for: macOS Catalina and macOS Mojave Impact: A remote attacker may be able to cause a denial of service Description: A null pointer dereference was addressed with improved input validation. CVE-2021-23841: Tavis Ormandy of Google CVE-2021-30698: Tavis Ormandy of Google Additional recognition WebKit We would like to acknowledge Chris Salls (@salls) of Makai Security for their assistance. Installation note: This update may be obtained from the Mac App Store. 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_management_for_kubernetes/2.2/html/release_notes/ Security fixes: * CVE-2021-3795 semver-regex: inefficient regular expression complexity * CVE-2021-23440 nodejs-set-value: type confusion allows bypass of CVE-2019-10747 Related bugs: * RHACM 2.2.10 images (Bugzilla #2013652) 3. Bugs fixed (https://bugzilla.redhat.com/): 2004944 - CVE-2021-23440 nodejs-set-value: type confusion allows bypass of CVE-2019-10747 2006009 - CVE-2021-3795 semver-regex: inefficient regular expression complexity 2013652 - RHACM 2.2.10 images 5. Clusters and applications are all visible and managed from a single console—with security policy built in. Container updates: * RHACM 2.1.12 images (BZ# 2007489) 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/): 2007489 - RHACM 2.1.12 images 2010991 - CVE-2021-32687 redis: Integer overflow issue with intsets 2011000 - CVE-2021-32675 redis: Denial of service via Redis Standard Protocol (RESP) request 2011001 - CVE-2021-32672 redis: Out of bounds read in lua debugger protocol parser 2011004 - CVE-2021-32628 redis: Integer overflow bug in the ziplist data structure 2011010 - CVE-2021-32627 redis: Integer overflow issue with Streams 2011017 - CVE-2021-32626 redis: Lua scripts can overflow the heap-based Lua stack 2011020 - CVE-2021-41099 redis: Integer overflow issue with strings 5. Bugs fixed (https://bugzilla.redhat.com/): 1983596 - CVE-2021-34558 golang: crypto/tls: certificate of wrong type is causing TLS client to panic 1992006 - CVE-2021-29923 golang: net: incorrect parsing of extraneous zero characters at the beginning of an IP address octet 1997017 - unprivileged client fails to get guest agent data 1998855 - Node drain: Sometimes source virt-launcher pod status is Failed and not Completed 2000251 - RoleBinding and ClusterRoleBinding brought in by kubevirt does not get reconciled when kind is ServiceAccount 2001270 - [VMIO] [Warm from Vmware] Snapshot files are not deleted after Successful Import 2001281 - [VMIO] [Warm from VMware] Source VM should not be turned ON if vmio import is removed 2001901 - [4.8.3] NNCP creation failures after nmstate-handler pod deletion 2007336 - 4.8.3 containers 2007776 - Failed to Migrate Windows VM with CDROM (readonly) 2008511 - [CNV-4.8.3] VMI is in LiveMigrate loop when Upgrading Cluster from 2.6.7/4.7.32 to OCP 4.8.13 2012890 - With descheduler during multiple VMIs migrations, some VMs are restarted 2025475 - [4.8.3] Upgrade from 2.6 to 4.x versions failed due to vlan-filtering issues 2026881 - [4.8.3] vlan-filtering is getting applied on veth ports 5. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: ACS 3.67 security and enhancement update Advisory ID: RHSA-2021:4902-01 Product: RHACS Advisory URL: https://access.redhat.com/errata/RHSA-2021:4902 Issue date: 2021-12-01 CVE Names: CVE-2018-20673 CVE-2019-5827 CVE-2019-13750 CVE-2019-13751 CVE-2019-17594 CVE-2019-17595 CVE-2019-18218 CVE-2019-19603 CVE-2019-20838 CVE-2020-12762 CVE-2020-13435 CVE-2020-14155 CVE-2020-16135 CVE-2020-24370 CVE-2020-27304 CVE-2021-3200 CVE-2021-3445 CVE-2021-3580 CVE-2021-3749 CVE-2021-3800 CVE-2021-3801 CVE-2021-20231 CVE-2021-20232 CVE-2021-20266 CVE-2021-22876 CVE-2021-22898 CVE-2021-22925 CVE-2021-23343 CVE-2021-23840 CVE-2021-23841 CVE-2021-27645 CVE-2021-28153 CVE-2021-29923 CVE-2021-32690 CVE-2021-33560 CVE-2021-33574 CVE-2021-35942 CVE-2021-36084 CVE-2021-36085 CVE-2021-36086 CVE-2021-36087 CVE-2021-39293 ===================================================================== 1. Summary: Updated images are now available for Red Hat Advanced Cluster Security for Kubernetes (RHACS). Red Hat Product Security has rated this update as having a security impact of Moderate. 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: The release of RHACS 3.67 provides the following new features, bug fixes, security patches and system changes: OpenShift Dedicated support RHACS 3.67 is thoroughly tested and supported on OpenShift Dedicated on Amazon Web Services and Google Cloud Platform. 1. Use OpenShift OAuth server as an identity provider If you are using RHACS with OpenShift, you can now configure the built-in OpenShift OAuth server as an identity provider for RHACS. 2. Enhancements for CI outputs Red Hat has improved the usability of RHACS CI integrations. CI outputs now show additional detailed information about the vulnerabilities and the security policies responsible for broken builds. 3. Runtime Class policy criteria Users can now use RHACS to define the container runtime configuration that may be used to run a pod’s containers using the Runtime Class policy criteria. Security Fix(es): * civetweb: directory traversal when using the built-in example HTTP form-based file upload mechanism via the mg_handle_form_request API (CVE-2020-27304) * nodejs-axios: Regular expression denial of service in trim function (CVE-2021-3749) * nodejs-prismjs: ReDoS vulnerability (CVE-2021-3801) * golang: net: incorrect parsing of extraneous zero characters at the beginning of an IP address octet (CVE-2021-29923) * helm: information disclosure vulnerability (CVE-2021-32690) * golang: archive/zip: malformed archive may cause panic or memory exhaustion (incomplete fix of CVE-2021-33196) (CVE-2021-39293) * nodejs-path-parse: ReDoS via splitDeviceRe, splitTailRe and splitPathRe (CVE-2021-23343) 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. Bug Fixes The release of RHACS 3.67 includes the following bug fixes: 1. Previously, when using RHACS with the Compliance Operator integration, RHACS did not respect or populate Compliance Operator TailoredProfiles. 2. Previously, the Alpine Linux package manager (APK) in Image policy looked for the presence of apk package in the image rather than the apk-tools package. This issue has been fixed. System changes The release of RHACS 3.67 includes the following system changes: 1. Scanner now identifies vulnerabilities in Ubuntu 21.10 images. 2. The Port exposure method policy criteria now include route as an exposure method. 3. The OpenShift: Kubeadmin Secret Accessed security policy now allows the OpenShift Compliance Operator to check for the existence of the Kubeadmin secret without creating a violation. 4. The OpenShift Compliance Operator integration now supports using TailoredProfiles. 5. The RHACS Jenkins plugin now provides additional security information. 6. When you enable the environment variable ROX_NETWORK_ACCESS_LOG for Central, the logs contain the Request URI and X-Forwarded-For header values. 7. The default uid:gid pair for the Scanner image is now 65534:65534. 8. RHACS adds a new default Scope Manager role that includes minimum permissions to create and modify access scopes. 9. If microdnf is part of an image or shows up in process execution, RHACS reports it as a security violation for the Red Hat Package Manager in Image or the Red Hat Package Manager Execution security policies. 10. In addition to manually uploading vulnerability definitions in offline mode, you can now upload definitions in online mode. 11. You can now format the output of the following roxctl CLI commands in table, csv, or JSON format: image scan, image check & deployment check 12. You can now use a regular expression for the deployment name while specifying policy exclusions 3. Solution: To take advantage of these new features, fixes and changes, please upgrade Red Hat Advanced Cluster Security for Kubernetes to version 3.67. 4. Bugs fixed (https://bugzilla.redhat.com/): 1956818 - CVE-2021-23343 nodejs-path-parse: ReDoS via splitDeviceRe, splitTailRe and splitPathRe 1978144 - CVE-2021-32690 helm: information disclosure vulnerability 1992006 - CVE-2021-29923 golang: net: incorrect parsing of extraneous zero characters at the beginning of an IP address octet 1999784 - CVE-2021-3749 nodejs-axios: Regular expression denial of service in trim function 2005445 - CVE-2021-3801 nodejs-prismjs: ReDoS vulnerability 2006044 - CVE-2021-39293 golang: archive/zip: malformed archive may cause panic or memory exhaustion (incomplete fix of CVE-2021-33196) 2016640 - CVE-2020-27304 civetweb: directory traversal when using the built-in example HTTP form-based file upload mechanism via the mg_handle_form_request API 5. JIRA issues fixed (https://issues.jboss.org/): RHACS-65 - Release RHACS 3.67.0 6. References: https://access.redhat.com/security/cve/CVE-2018-20673 https://access.redhat.com/security/cve/CVE-2019-5827 https://access.redhat.com/security/cve/CVE-2019-13750 https://access.redhat.com/security/cve/CVE-2019-13751 https://access.redhat.com/security/cve/CVE-2019-17594 https://access.redhat.com/security/cve/CVE-2019-17595 https://access.redhat.com/security/cve/CVE-2019-18218 https://access.redhat.com/security/cve/CVE-2019-19603 https://access.redhat.com/security/cve/CVE-2019-20838 https://access.redhat.com/security/cve/CVE-2020-12762 https://access.redhat.com/security/cve/CVE-2020-13435 https://access.redhat.com/security/cve/CVE-2020-14155 https://access.redhat.com/security/cve/CVE-2020-16135 https://access.redhat.com/security/cve/CVE-2020-24370 https://access.redhat.com/security/cve/CVE-2020-27304 https://access.redhat.com/security/cve/CVE-2021-3200 https://access.redhat.com/security/cve/CVE-2021-3445 https://access.redhat.com/security/cve/CVE-2021-3580 https://access.redhat.com/security/cve/CVE-2021-3749 https://access.redhat.com/security/cve/CVE-2021-3800 https://access.redhat.com/security/cve/CVE-2021-3801 https://access.redhat.com/security/cve/CVE-2021-20231 https://access.redhat.com/security/cve/CVE-2021-20232 https://access.redhat.com/security/cve/CVE-2021-20266 https://access.redhat.com/security/cve/CVE-2021-22876 https://access.redhat.com/security/cve/CVE-2021-22898 https://access.redhat.com/security/cve/CVE-2021-22925 https://access.redhat.com/security/cve/CVE-2021-23343 https://access.redhat.com/security/cve/CVE-2021-23840 https://access.redhat.com/security/cve/CVE-2021-23841 https://access.redhat.com/security/cve/CVE-2021-27645 https://access.redhat.com/security/cve/CVE-2021-28153 https://access.redhat.com/security/cve/CVE-2021-29923 https://access.redhat.com/security/cve/CVE-2021-32690 https://access.redhat.com/security/cve/CVE-2021-33560 https://access.redhat.com/security/cve/CVE-2021-33574 https://access.redhat.com/security/cve/CVE-2021-35942 https://access.redhat.com/security/cve/CVE-2021-36084 https://access.redhat.com/security/cve/CVE-2021-36085 https://access.redhat.com/security/cve/CVE-2021-36086 https://access.redhat.com/security/cve/CVE-2021-36087 https://access.redhat.com/security/cve/CVE-2021-39293 https://access.redhat.com/security/updates/classification/#moderate 7. 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 iQIVAwUBYafeGdzjgjWX9erEAQgZ8Q/9H5ov4ZfKZszdJu0WvRMetEt6DMU2RTZr Kjv4h4FnmsMDYYDocnkFvsRjcpdGxtoUShAqD6+FrTNXjPtA/v1tsQTJzhg4o50w tKa9T4aHfrYXjGvWgQXJJEGmGaYMYePUOv77x6pLfMB+FmgfOtb8kzOdNzAtqX3e lq8b2DrQuPSRiWkUgFM2hmS7OtUsqTIShqWu67HJdOY74qDN4DGp7GnG6inCrUjV x4/4X5Fb7JrAYiy57C5eZwYW61HmrG7YHk9SZTRYgRW0rfgLncVsny4lX1871Ch2 e8ttu0EJFM1EJyuCJwJd1Q+rhua6S1VSY+etLUuaYme5DtvozLXQTLUK31qAq/hK qnLYQjaSieea9j1dV6YNHjnvV0XGczyZYwzmys/CNVUxwvSHr1AJGmQ3zDeOt7Qz vguWmPzyiob3RtHjfUlUpPYeI6HVug801YK6FAoB9F2BW2uHVgbtKOwG5pl5urJt G4taizPtH8uJj5hem5nHnSE1sVGTiStb4+oj2LQonRkgLQ2h7tsX8Z8yWM/3TwUT PTBX9AIHwt8aCx7XxTeEIs0H9B1T9jYfy06o9H2547un9sBoT0Sm7fqKuJKic8N/ pJ2kXBiVJ9B4G+JjWe8rh1oC1yz5Q5/5HZ19VYBjHhYEhX4s9s2YsF1L1uMoT3NN T0pPNmsPGZY= =ux5P -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce . Red Hat OpenShift Container Storage is highly scalable, production-grade persistent storage for stateful applications running in the Red Hat OpenShift Container Platform. In addition to persistent storage, Red Hat OpenShift Container Storage provides a multicloud data management service with an S3 compatible API. Bug Fix(es): * Previously, when the namespace store target was deleted, no alert was sent to the namespace bucket because of an issue in calculating the namespace bucket health. With this update, the issue in calculating the namespace bucket health is fixed and alerts are triggered as expected. (BZ#1993873) * Previously, the Multicloud Object Gateway (MCG) components performed slowly and there was a lot of pressure on the MCG components due to non-optimized database queries. With this update the non-optimized database queries are fixed which reduces the compute resources and time taken for queries. Bugs fixed (https://bugzilla.redhat.com/): 1993873 - [4.8.z clone] Alert NooBaaNamespaceBucketErrorState is not triggered when namespacestore's target bucket is deleted 2006958 - CVE-2020-26301 nodejs-ssh2: Command injection by calling vulnerable method with untrusted input 5

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

TYPE

overflow

EXPLOIT AVAILABILITY

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Red Hat

SOURCES

LAST UPDATE DATE

2026-02-07T22:26:41.700000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE