ID

VAR-202102-1488

CVE

CVE-2021-23841

TITLE

OpenSSL Code problem 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). There is no information about this vulnerability at present. 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. For the detailed security status of openssl please refer to its security tracker page at: https://security-tracker.debian.org/tracker/openssl Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: debian-security-announce@lists.debian.org -----BEGIN PGP SIGNATURE----- iQKTBAEBCgB9FiEERkRAmAjBceBVMd3uBUy48xNDz0QFAmAtHDpfFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldDQ2 NDQ0MDk4MDhDMTcxRTA1NTMxRERFRTA1NENCOEYzMTM0M0NGNDQACgkQBUy48xND z0SYCg/9HRfTx/x8jaG8pn8kcPmUiSs+WkMBXmQeg97Gf6NLeflYczwtZ9MGWAAj J9R72BqppoSGaI4MPgUQPRDRHclktJOxBkICyiYL35G18x0iFz352rfHegq9rzVe VxJAXh3Xo6hA/SX046rjh+gJU63fgiE4Wy9T1D9y9A582FHfqhNFpEbWyzA871hG nDFabpyvRltEC/XXu5pejqU9cguc4wF6pVjMffF1ikV6srAFPFO14v5aYYTWHEe1 D5cOUe6ckFIJBHYO4NEldlfRN1OVUZUMERQwjkfJ6RnwOxzN9dAdnhle+nqgeC7P GwyVHTNIIhNOpjo24j0d13npJqdBvpXygG8TVDzRGm70SgMsizIm/b8ID9yzQjXH 45ziZZKLnLDDE55v62bUZ7KOe3DZYp/dElZ6mt/xKikC10GEOv1exsaB12s4LlDx +7VF2U3nAer//G2LkGAPkbNAT1RC1uibnivyed3uHpUwFewE0fsdaoHtwFPPYDNp Y7dyMI+SpAF1/6PW7kBqgHtyp9GAp2fcldV1uLmr9FKoBASvemkReHH1/eDzPqaA xKzJ67vi9vX3IKtEz+T/EftZ5VDb/JW/f5EPsLNKjQJomRaQRr9EnYMVFCERVwvk IMCzTgoed90pMSWyfO7BkywXMk4t14IeV9PhGVTfCrdpr4c2QC4= =hM2Z -----END PGP SIGNATURE----- . Bugs fixed (https://bugzilla.redhat.com/): 1944888 - CVE-2021-21409 netty: Request smuggling via content-length header 2004133 - CVE-2021-37136 netty-codec: Bzip2Decoder doesn't allow setting size restrictions for decompressed data 2004135 - CVE-2021-37137 netty-codec: SnappyFrameDecoder doesn't restrict chunk length and may buffer skippable chunks in an unnecessary way 2030932 - CVE-2021-44228 log4j-core: Remote code execution in Log4j 2.x when logs contain an attacker-controlled string value 5. JIRA issues fixed (https://issues.jboss.org/): LOG-1971 - Applying cluster state is causing elasticsearch to hit an issue and become unusable 6. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Moderate: openssl security and bug fix update Advisory ID: RHSA-2021:4424-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:4424 Issue date: 2021-11-09 CVE Names: CVE-2021-23840 CVE-2021-23841 ==================================================================== 1. Summary: An update for openssl is now available for Red Hat Enterprise Linux 8. 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. Relevant releases/architectures: Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, ppc64le, s390x, x86_64 3. Description: OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols, as well as a full-strength general-purpose cryptography library. 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. 4. 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 For the update to take effect, all services linked to the OpenSSL library must be restarted, or the system rebooted. 5. Bugs fixed (https://bugzilla.redhat.com/): 1908036 - openssl listens on IPv4 "any" socket only not on IPv6 1930310 - CVE-2021-23841 openssl: NULL pointer dereference in X509_issuer_and_serial_hash() 1930324 - CVE-2021-23840 openssl: integer overflow in CipherUpdate 1934534 - Rebase OpenSSL to 1.1.1k 1934600 - DTLS1.0 connections are allowed in DEFAULT crypto-policy [rhel-8] 1939637 - Openssl -dtls option breaks in FIPS mode[rhel8] 1940085 - FIPS_selftest() fails in FIPS mode. 1965362 - In renegotiated handshake openssl sends extensions which client didn't advertise in second ClientHello [rhel-8] 6. Package List: Red Hat Enterprise Linux BaseOS (v. 8): Source: openssl-1.1.1k-4.el8.src.rpm aarch64: openssl-1.1.1k-4.el8.aarch64.rpm openssl-debuginfo-1.1.1k-4.el8.aarch64.rpm openssl-debugsource-1.1.1k-4.el8.aarch64.rpm openssl-devel-1.1.1k-4.el8.aarch64.rpm openssl-libs-1.1.1k-4.el8.aarch64.rpm openssl-libs-debuginfo-1.1.1k-4.el8.aarch64.rpm openssl-perl-1.1.1k-4.el8.aarch64.rpm ppc64le: openssl-1.1.1k-4.el8.ppc64le.rpm openssl-debuginfo-1.1.1k-4.el8.ppc64le.rpm openssl-debugsource-1.1.1k-4.el8.ppc64le.rpm openssl-devel-1.1.1k-4.el8.ppc64le.rpm openssl-libs-1.1.1k-4.el8.ppc64le.rpm openssl-libs-debuginfo-1.1.1k-4.el8.ppc64le.rpm openssl-perl-1.1.1k-4.el8.ppc64le.rpm s390x: openssl-1.1.1k-4.el8.s390x.rpm openssl-debuginfo-1.1.1k-4.el8.s390x.rpm openssl-debugsource-1.1.1k-4.el8.s390x.rpm openssl-devel-1.1.1k-4.el8.s390x.rpm openssl-libs-1.1.1k-4.el8.s390x.rpm openssl-libs-debuginfo-1.1.1k-4.el8.s390x.rpm openssl-perl-1.1.1k-4.el8.s390x.rpm x86_64: openssl-1.1.1k-4.el8.x86_64.rpm openssl-debuginfo-1.1.1k-4.el8.i686.rpm openssl-debuginfo-1.1.1k-4.el8.x86_64.rpm openssl-debugsource-1.1.1k-4.el8.i686.rpm openssl-debugsource-1.1.1k-4.el8.x86_64.rpm openssl-devel-1.1.1k-4.el8.i686.rpm openssl-devel-1.1.1k-4.el8.x86_64.rpm openssl-libs-1.1.1k-4.el8.i686.rpm openssl-libs-1.1.1k-4.el8.x86_64.rpm openssl-libs-debuginfo-1.1.1k-4.el8.i686.rpm openssl-libs-debuginfo-1.1.1k-4.el8.x86_64.rpm openssl-perl-1.1.1k-4.el8.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2021-23840 https://access.redhat.com/security/cve/CVE-2021-23841 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.5_release_notes/ 8. 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 iQIVAwUBYYrdYdzjgjWX9erEAQj6ABAAqRDnIaOs2B3rKsf4N+Yn925VrF08Yb7q x7j3ncYOIRGlsw5m363I2nkE1Fvf9w/O1aLXly3CTlLN1KpifKiRwBZOBVnBJC18 jDemxS0CvtuCxGwtESGRUawdRe6IkTF4z7zDVKjSDaPsNE5UOvpOX5DQaAEKVAvl GAiTKHgguLOaLNzwqEKOKCcWpQQOGUrzzN3JcTiqZTzPWShSzdvIsPcDf15nkK27 XVmplmluVxcaDbve7hVAx5Zo6/smM9UBVtgF2iEb45nxsGkh+czu6pHdowBbp4uP r4n9nSTI8Fl5HrtFYQERuf3Ft9+OWfVy7GSXxe5pNg3KVFyKVfo2bAPpt5cq1V7G 7ke1wnlKSNus/kUme+mtPjDZqTb4lbSsNq1MF37pZ1gUVsUU5C0J9lNTRdpcB2EK ZJRoPka2hXUpO9wGQfQ8c0Vvf93v6uN7X/0sTj42157nqJd0ry7/fmpvo7re/oKd xPHDALDjUvS4ZgUkqOb0G+fUb2LCLPUsWNEMql/WLZAfKZIVjcIeelIJSuJ8dLKv oZNVJOxAQbndFWHOpNRCVMayERK4XegHKQguDAEfWzVUAS4IGCc6cwY15KUJ5vaZ W9cJ1fu5LKx7Q19Wz3jYJkMnoy+JHYtU1WJJ5yUMwvQw1QgIcu15BNGKbydm7imX 2E9d3hgUSpw=WTA4 -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce . Description: Red Hat Advanced Cluster Management for Kubernetes 2.3.0 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/2.3/html/release_notes/ Security: * fastify-reply-from: crafted URL allows prefix scape of the proxied backend service (CVE-2021-21321) * fastify-http-proxy: crafted URL allows prefix scape of the proxied backend service (CVE-2021-21322) * nodejs-netmask: improper input validation of octal input data (CVE-2021-28918) * redis: Integer overflow via STRALGO LCS command (CVE-2021-29477) * redis: Integer overflow via COPY command for large intsets (CVE-2021-29478) * nodejs-glob-parent: Regular expression denial of service (CVE-2020-28469) * nodejs-lodash: ReDoS via the toNumber, trim and trimEnd functions (CVE-2020-28500) * golang.org/x/text: Panic in language.ParseAcceptLanguage while parsing - -u- extension (CVE-2020-28851) * golang.org/x/text: Panic in language.ParseAcceptLanguage while processing bcp47 tag (CVE-2020-28852) * nodejs-ansi_up: XSS due to insufficient URL sanitization (CVE-2021-3377) * oras: zip-slip vulnerability via oras-pull (CVE-2021-21272) * redis: integer overflow when configurable limit for maximum supported bulk input size is too big on 32-bit platforms (CVE-2021-21309) * nodejs-lodash: command injection via template (CVE-2021-23337) * nodejs-hosted-git-info: Regular Expression denial of service via shortcutMatch in fromUrl() (CVE-2021-23362) * browserslist: parsing of invalid queries could result in Regular Expression Denial of Service (ReDoS) (CVE-2021-23364) * nodejs-postcss: Regular expression denial of service during source map parsing (CVE-2021-23368) * nodejs-handlebars: Remote code execution when compiling untrusted compile templates with strict:true option (CVE-2021-23369) * nodejs-postcss: ReDoS via getAnnotationURL() and loadAnnotation() in lib/previous-map.js (CVE-2021-23382) * nodejs-handlebars: Remote code execution when compiling untrusted compile templates with compat:true option (CVE-2021-23383) * openssl: integer overflow in CipherUpdate (CVE-2021-23840) * openssl: NULL pointer dereference in X509_issuer_and_serial_hash() (CVE-2021-23841) * nodejs-ua-parser-js: ReDoS via malicious User-Agent header (CVE-2021-27292) * grafana: snapshot feature allow an unauthenticated remote attacker to trigger a DoS via a remote API call (CVE-2021-27358) * nodejs-is-svg: ReDoS via malicious string (CVE-2021-28092) * nodejs-netmask: incorrectly parses an IP address that has octal integer with invalid character (CVE-2021-29418) * ulikunitz/xz: Infinite loop in readUvarint allows for denial of service (CVE-2021-29482) * normalize-url: ReDoS for data URLs (CVE-2021-33502) * nodejs-trim-newlines: ReDoS in .end() method (CVE-2021-33623) * nodejs-path-parse: ReDoS via splitDeviceRe, splitTailRe and splitPathRe (CVE-2021-23343) * html-parse-stringify: Regular Expression DoS (CVE-2021-23346) * openssl: incorrect SSLv2 rollback protection (CVE-2021-23839) For more details about the security issues, including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE pages listed in the References section. Bugs: * RFE Make the source code for the endpoint-metrics-operator public (BZ# 1913444) * cluster became offline after apiserver health check (BZ# 1942589) 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/): 1913333 - CVE-2020-28851 golang.org/x/text: Panic in language.ParseAcceptLanguage while parsing -u- extension 1913338 - CVE-2020-28852 golang.org/x/text: Panic in language.ParseAcceptLanguage while processing bcp47 tag 1913444 - RFE Make the source code for the endpoint-metrics-operator public 1921286 - CVE-2021-21272 oras: zip-slip vulnerability via oras-pull 1927520 - RHACM 2.3.0 images 1928937 - CVE-2021-23337 nodejs-lodash: command injection via template 1928954 - CVE-2020-28500 nodejs-lodash: ReDoS via the toNumber, trim and trimEnd functions 1930294 - CVE-2021-23839 openssl: incorrect SSLv2 rollback protection 1930310 - CVE-2021-23841 openssl: NULL pointer dereference in X509_issuer_and_serial_hash() 1930324 - CVE-2021-23840 openssl: integer overflow in CipherUpdate 1932634 - CVE-2021-21309 redis: integer overflow when configurable limit for maximum supported bulk input size is too big on 32-bit platforms 1936427 - CVE-2021-3377 nodejs-ansi_up: XSS due to insufficient URL sanitization 1939103 - CVE-2021-28092 nodejs-is-svg: ReDoS via malicious string 1940196 - View Resource YAML option shows 404 error when reviewing a Subscription for an application 1940613 - CVE-2021-27292 nodejs-ua-parser-js: ReDoS via malicious User-Agent header 1941024 - CVE-2021-27358 grafana: snapshot feature allow an unauthenticated remote attacker to trigger a DoS via a remote API call 1941675 - CVE-2021-23346 html-parse-stringify: Regular Expression DoS 1942178 - CVE-2021-21321 fastify-reply-from: crafted URL allows prefix scape of the proxied backend service 1942182 - CVE-2021-21322 fastify-http-proxy: crafted URL allows prefix scape of the proxied backend service 1942589 - cluster became offline after apiserver health check 1943208 - CVE-2021-23362 nodejs-hosted-git-info: Regular Expression denial of service via shortcutMatch in fromUrl() 1944822 - CVE-2021-29418 nodejs-netmask: incorrectly parses an IP address that has octal integer with invalid character 1944827 - CVE-2021-28918 nodejs-netmask: improper input validation of octal input data 1945459 - CVE-2020-28469 nodejs-glob-parent: Regular expression denial of service 1948761 - CVE-2021-23369 nodejs-handlebars: Remote code execution when compiling untrusted compile templates with strict:true option 1948763 - CVE-2021-23368 nodejs-postcss: Regular expression denial of service during source map parsing 1954150 - CVE-2021-23382 nodejs-postcss: ReDoS via getAnnotationURL() and loadAnnotation() in lib/previous-map.js 1954368 - CVE-2021-29482 ulikunitz/xz: Infinite loop in readUvarint allows for denial of service 1955619 - CVE-2021-23364 browserslist: parsing of invalid queries could result in Regular Expression Denial of Service (ReDoS) 1956688 - CVE-2021-23383 nodejs-handlebars: Remote code execution when compiling untrusted compile templates with compat:true option 1956818 - CVE-2021-23343 nodejs-path-parse: ReDoS via splitDeviceRe, splitTailRe and splitPathRe 1957410 - CVE-2021-29477 redis: Integer overflow via STRALGO LCS command 1957414 - CVE-2021-29478 redis: Integer overflow via COPY command for large intsets 1964461 - CVE-2021-33502 normalize-url: ReDoS for data URLs 1966615 - CVE-2021-33623 nodejs-trim-newlines: ReDoS in .end() method 1968122 - clusterdeployment fails because hiveadmission sc does not have correct permissions 1972703 - Subctl fails to join cluster, since it cannot auto-generate a valid cluster id 1983131 - Defragmenting an etcd member doesn't reduce the DB size (7.5GB) on a setup with ~1000 spoke clusters 5. This issue was reported to OpenSSL on 15th December 2020 by Tavis Ormandy from Google. The fix was developed by Matt Caswell. Incorrect SSLv2 rollback protection (CVE-2021-23839) ==================================================== Severity: Low OpenSSL 1.0.2 supports SSLv2. If a client attempts to negotiate SSLv2 with a server that is configured to support both SSLv2 and more recent SSL and TLS versions then a check is made for a version rollback attack when unpadding an RSA signature. Clients that support SSL or TLS versions greater than SSLv2 are supposed to use a special form of padding. A server that supports greater than SSLv2 is supposed to reject connection attempts from a client where this special form of padding is present, because this indicates that a version rollback has occurred (i.e. both client and server support greater than SSLv2, and yet this is the version that is being requested). The implementation of this padding check inverted the logic so that the connection attempt is accepted if the padding is present, and rejected if it is absent. This means that such as server will accept a connection if a version rollback attack has occurred. Further the server will erroneously reject a connection if a normal SSLv2 connection attempt is made. In order to be vulnerable a 1.0.2 server must: 1) have configured SSLv2 support at compile time (this is off by default), 2) have configured SSLv2 support at runtime (this is off by default), 3) have configured SSLv2 ciphersuites (these are not in the default ciphersuite list) OpenSSL 1.1.1 does not have SSLv2 support and therefore is not vulnerable to this issue. The underlying error is in the implementation of the RSA_padding_check_SSLv23() function. This also affects the RSA_SSLV23_PADDING padding mode used by various other functions. Although 1.1.1 does not support SSLv2 the RSA_padding_check_SSLv23() function still exists, as does the RSA_SSLV23_PADDING padding mode. However since there is no support for the SSLv2 protocol in 1.1.1 this is considered a bug and not a security issue in that version. This issue was reported to OpenSSL on 21st January 2021 by D. Katz and Joel Luellwitz from Trustwave. The fix was developed by Matt Caswell. Integer overflow in CipherUpdate (CVE-2021-23840) ================================================= Severity: Low Calls to EVP_CipherUpdate, EVP_EncryptUpdate and EVP_DecryptUpdate may overflow the output length argument in some cases where the input length is close to the maximum permissable length for an integer on the platform. In such cases the return value from the function call will be 1 (indicating success), but the output length value will be negative. This could cause applications to behave incorrectly or crash. This issue was reported to OpenSSL on 13th December 2020 by Paul Kehrer. The fix was developed by Matt Caswell. References ========== URL for this Security Advisory: https://www.openssl.org/news/secadv/20210216.txt Note: the online version of the advisory may be updated with additional details over time. For details of OpenSSL severity classifications please see: https://www.openssl.org/policies/secpolicy.html . 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. Summary: The Migration Toolkit for Containers (MTC) 1.5.2 is now available. Description: The Migration Toolkit for Containers (MTC) enables you to migrate Kubernetes resources, persistent volume data, and internal container images between OpenShift Container Platform clusters, using the MTC web console or the Kubernetes API. Bugs fixed (https://bugzilla.redhat.com/): 2000734 - CVE-2021-3757 nodejs-immer: prototype pollution may lead to DoS or remote code execution 2005438 - Combining Rsync and Stunnel in a single pod can degrade performance (1.5 backport) 2006842 - MigCluster CR remains in "unready" state and source registry is inaccessible after temporary shutdown of source cluster 2007429 - "oc describe" and "oc log" commands on "Migration resources" tree cannot be copied after failed migration 2022017 - CVE-2021-3948 mig-controller: incorrect namespaces handling may lead to not authorized usage of Migration Toolkit for Containers (MTC) 5

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

TYPE

code problem

EXPLOIT AVAILABILITY

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Red Hat

SOURCES

LAST UPDATE DATE

2026-03-17T20:23:04.683000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE