rhsa-2021_4424
Vulnerability from csaf_redhat
Published
2021-11-09 18:08
Modified
2024-11-06 00:06
Summary
Red Hat Security Advisory: openssl security and bug fix update
Notes
Topic
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.
Details
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.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
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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.", "title": "Topic" }, { "category": "general", "text": "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.\n\nSecurity Fix(es):\n\n* openssl: integer overflow in CipherUpdate (CVE-2021-23840)\n\n* openssl: NULL pointer dereference in X509_issuer_and_serial_hash() (CVE-2021-23841)\n\nFor 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.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Red Hat Enterprise Linux 8.5 Release Notes linked from the References section.", "title": "Details" }, { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://access.redhat.com/security/team/contact/", "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.", "name": "Red Hat Product Security", "namespace": "https://www.redhat.com" }, "references": [ { "category": "self", "summary": "https://access.redhat.com/errata/RHSA-2021:4424", "url": "https://access.redhat.com/errata/RHSA-2021:4424" }, { "category": "external", "summary": "https://access.redhat.com/security/updates/classification/#moderate", "url": "https://access.redhat.com/security/updates/classification/#moderate" }, { "category": "external", "summary": "https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.5_release_notes/", "url": "https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.5_release_notes/" }, { "category": "external", "summary": "1908036", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1908036" }, { "category": "external", "summary": "1930310", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1930310" }, { "category": "external", "summary": "1930324", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1930324" }, { "category": "external", "summary": "1934534", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1934534" }, { "category": "external", "summary": "1934600", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1934600" }, { "category": "external", "summary": "1939637", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1939637" }, { "category": "external", "summary": "1940085", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1940085" }, { "category": "external", "summary": "1965362", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1965362" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2021/rhsa-2021_4424.json" } ], "title": "Red Hat Security Advisory: openssl security and bug fix update", "tracking": { "current_release_date": "2024-11-06T00:06:47+00:00", "generator": { "date": "2024-11-06T00:06:47+00:00", "engine": { "name": "Red Hat SDEngine", "version": "4.1.1" } }, "id": "RHSA-2021:4424", "initial_release_date": "2021-11-09T18:08:40+00:00", "revision_history": [ { "date": "2021-11-09T18:08:40+00:00", "number": "1", "summary": "Initial version" }, { "date": "2021-11-09T18:08:40+00:00", "number": "2", "summary": "Last updated version" }, { "date": "2024-11-06T00:06:47+00:00", "number": "3", "summary": "Last generated version" } ], "status": "final", "version": "3" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Red Hat Enterprise Linux BaseOS (v. 8)", "product": { "name": "Red Hat Enterprise 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"2021-02-09T00:00:00+00:00", "ids": [ { "system_name": "Red Hat Bugzilla ID", "text": "1930324" } ], "notes": [ { "category": "description", "text": "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 permissible 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.", "title": "Vulnerability description" }, { "category": "summary", "text": "openssl: integer overflow in CipherUpdate", "title": "Vulnerability summary" }, { "category": "other", "text": "This flaw only affects applications which are compiled with OpenSSL and using EVP_CipherUpdate, EVP_EncryptUpdate or EVP_DecryptUpdate functions. When specially-crafted values are passed to these functions, it can cause the application to crash or behave incorrectly.\n\nOpenSSL in Red Hat Enterprise Linux 9 was marked as not affected as its already fixed in RHEL9 Alpha release.", "title": "Statement" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.aarch64", "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.ppc64le", "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.s390x", "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.src", "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.x86_64", "BaseOS-8.5.0.GA:openssl-debuginfo-1:1.1.1k-4.el8.aarch64", "BaseOS-8.5.0.GA:openssl-debuginfo-1:1.1.1k-4.el8.i686", "BaseOS-8.5.0.GA:openssl-debuginfo-1:1.1.1k-4.el8.ppc64le", 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"https://nvd.nist.gov/vuln/detail/CVE-2021-23840", "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-23840" }, { "category": "external", "summary": "https://www.openssl.org/news/secadv/20210216.txt", "url": "https://www.openssl.org/news/secadv/20210216.txt" } ], "release_date": "2021-02-16T00:00:00+00:00", "remediations": [ { "category": "vendor_fix", "date": "2021-11-09T18:08:40+00:00", "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nFor the update to take effect, all services linked to the OpenSSL library must be restarted, or the system rebooted.", "product_ids": [ "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.aarch64", "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.ppc64le", "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.s390x", "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.src", "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.x86_64", "BaseOS-8.5.0.GA:openssl-debuginfo-1:1.1.1k-4.el8.aarch64", 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"scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" }, "products": [ "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.aarch64", "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.ppc64le", "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.s390x", "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.src", "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.x86_64", "BaseOS-8.5.0.GA:openssl-debuginfo-1:1.1.1k-4.el8.aarch64", "BaseOS-8.5.0.GA:openssl-debuginfo-1:1.1.1k-4.el8.i686", "BaseOS-8.5.0.GA:openssl-debuginfo-1:1.1.1k-4.el8.ppc64le", "BaseOS-8.5.0.GA:openssl-debuginfo-1:1.1.1k-4.el8.s390x", "BaseOS-8.5.0.GA:openssl-debuginfo-1:1.1.1k-4.el8.x86_64", "BaseOS-8.5.0.GA:openssl-debugsource-1:1.1.1k-4.el8.aarch64", "BaseOS-8.5.0.GA:openssl-debugsource-1:1.1.1k-4.el8.i686", "BaseOS-8.5.0.GA:openssl-debugsource-1:1.1.1k-4.el8.ppc64le", "BaseOS-8.5.0.GA:openssl-debugsource-1:1.1.1k-4.el8.s390x", "BaseOS-8.5.0.GA:openssl-debugsource-1:1.1.1k-4.el8.x86_64", 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"BaseOS-8.5.0.GA:openssl-perl-1:1.1.1k-4.el8.s390x", "BaseOS-8.5.0.GA:openssl-perl-1:1.1.1k-4.el8.x86_64" ] } ], "threats": [ { "category": "impact", "details": "Moderate" } ], "title": "openssl: integer overflow in CipherUpdate" }, { "cve": "CVE-2021-23841", "cwe": { "id": "CWE-476", "name": "NULL Pointer Dereference" }, "discovery_date": "2021-02-16T00:00:00+00:00", "ids": [ { "system_name": "Red Hat Bugzilla ID", "text": "1930310" } ], "notes": [ { "category": "description", "text": "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.", "title": "Vulnerability description" }, { "category": "summary", "text": "openssl: NULL pointer dereference in X509_issuer_and_serial_hash()", "title": "Vulnerability summary" }, { "category": "other", "text": "This is a a null pointer dereference in the X509_issuer_and_serial_hash() function, which can result in crash if called by an application compiled with OpenSSL, by passing a specially-crafted certificate. OpenSSL internally does not use this function.", "title": "Statement" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.aarch64", "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.ppc64le", "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.s390x", "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.src", "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.x86_64", "BaseOS-8.5.0.GA:openssl-debuginfo-1:1.1.1k-4.el8.aarch64", "BaseOS-8.5.0.GA:openssl-debuginfo-1:1.1.1k-4.el8.i686", "BaseOS-8.5.0.GA:openssl-debuginfo-1:1.1.1k-4.el8.ppc64le", "BaseOS-8.5.0.GA:openssl-debuginfo-1:1.1.1k-4.el8.s390x", "BaseOS-8.5.0.GA:openssl-debuginfo-1:1.1.1k-4.el8.x86_64", "BaseOS-8.5.0.GA:openssl-debugsource-1:1.1.1k-4.el8.aarch64", 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"https://www.openssl.org/news/secadv/20210216.txt" } ], "release_date": "2021-02-16T00:00:00+00:00", "remediations": [ { "category": "vendor_fix", "date": "2021-11-09T18:08:40+00:00", "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nFor the update to take effect, all services linked to the OpenSSL library must be restarted, or the system rebooted.", "product_ids": [ "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.aarch64", "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.ppc64le", "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.s390x", "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.src", "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.x86_64", "BaseOS-8.5.0.GA:openssl-debuginfo-1:1.1.1k-4.el8.aarch64", "BaseOS-8.5.0.GA:openssl-debuginfo-1:1.1.1k-4.el8.i686", "BaseOS-8.5.0.GA:openssl-debuginfo-1:1.1.1k-4.el8.ppc64le", "BaseOS-8.5.0.GA:openssl-debuginfo-1:1.1.1k-4.el8.s390x", 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"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" }, "products": [ "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.aarch64", "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.ppc64le", "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.s390x", "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.src", "BaseOS-8.5.0.GA:openssl-1:1.1.1k-4.el8.x86_64", "BaseOS-8.5.0.GA:openssl-debuginfo-1:1.1.1k-4.el8.aarch64", "BaseOS-8.5.0.GA:openssl-debuginfo-1:1.1.1k-4.el8.i686", "BaseOS-8.5.0.GA:openssl-debuginfo-1:1.1.1k-4.el8.ppc64le", "BaseOS-8.5.0.GA:openssl-debuginfo-1:1.1.1k-4.el8.s390x", "BaseOS-8.5.0.GA:openssl-debuginfo-1:1.1.1k-4.el8.x86_64", "BaseOS-8.5.0.GA:openssl-debugsource-1:1.1.1k-4.el8.aarch64", "BaseOS-8.5.0.GA:openssl-debugsource-1:1.1.1k-4.el8.i686", "BaseOS-8.5.0.GA:openssl-debugsource-1:1.1.1k-4.el8.ppc64le", 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"BaseOS-8.5.0.GA:openssl-perl-1:1.1.1k-4.el8.aarch64", "BaseOS-8.5.0.GA:openssl-perl-1:1.1.1k-4.el8.ppc64le", "BaseOS-8.5.0.GA:openssl-perl-1:1.1.1k-4.el8.s390x", "BaseOS-8.5.0.GA:openssl-perl-1:1.1.1k-4.el8.x86_64" ] } ], "threats": [ { "category": "impact", "details": "Moderate" } ], "title": "openssl: NULL pointer dereference in X509_issuer_and_serial_hash()" } ] }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.