rhsa-2021_0189
Vulnerability from csaf_redhat
Published
2021-01-19 12:28
Modified
2024-11-15 06:22
Summary
Red Hat Security Advisory: kpatch-patch security update
Notes
Topic
An update is now available for Red Hat Enterprise Linux 8.
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.
Details
This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel.
Security Fix(es):
* kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c (CVE-2020-25211)
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.
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.
{ "document": { "aggregate_severity": { "namespace": "https://access.redhat.com/security/updates/classification/", "text": "Important" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "summary", "text": "An update is now available for Red Hat Enterprise Linux 8.\n\nRed 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.", "title": "Topic" }, { "category": "general", "text": "This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel.\n\nSecurity Fix(es):\n\n* kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c (CVE-2020-25211)\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.", "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-2021:0189", "url": "https://access.redhat.com/errata/RHSA-2021:0189" }, { "category": "external", "summary": "https://access.redhat.com/security/updates/classification/#important", "url": "https://access.redhat.com/security/updates/classification/#important" }, { "category": "external", "summary": "1877571", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1877571" }, { "category": "self", "summary": "Canonical 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"kpatch-patch-4_18_0-147_8_1-0:1-8.el8_1.x86_64", "relates_to_product_reference": "BaseOS-8.1.0.Z.EUS" } ] }, "vulnerabilities": [ { "acknowledgments": [ { "names": [ "Will McVicker" ], "organization": "Google" } ], "cve": "CVE-2020-25211", "cwe": { "id": "CWE-119", "name": "Improper Restriction of Operations within the Bounds of a Memory Buffer" }, "discovery_date": "2020-09-09T00:00:00+00:00", "ids": [ { "system_name": "Red Hat Bugzilla ID", "text": "1877571" } ], "notes": [ { "category": "description", "text": "A flaw was found in the Linux kernel. A local attacker, able to inject conntrack netlink configuration, could overflow a local buffer causing crashes or triggering the use of incorrect protocol numbers in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.", "title": "Vulnerability description" }, { "category": "summary", "text": "kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c", "title": "Vulnerability summary" }, { "category": "other", "text": "This flaw is rated as having Moderate impact (Red Hat Enterprise Linux 7 and lower) because of the need to have CAP_NET_ADMIN privileges.\n\nThis flaw is rated as having Important (Red Hat Enterprise Linux 8) impact because of the need to have CAP_NET_ADMIN privileges. Red Hat Enterprise Linux 8 enabled unprivileged user/network namespaces by default which can be used to exercise this vulnerability.", "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-8.1.0.Z.EUS:kpatch-patch-4_18_0-147_13_2-0:1-6.el8_1.ppc64le", "BaseOS-8.1.0.Z.EUS:kpatch-patch-4_18_0-147_13_2-0:1-6.el8_1.src", "BaseOS-8.1.0.Z.EUS:kpatch-patch-4_18_0-147_13_2-0:1-6.el8_1.x86_64", "BaseOS-8.1.0.Z.EUS:kpatch-patch-4_18_0-147_13_2-debuginfo-0:1-6.el8_1.ppc64le", "BaseOS-8.1.0.Z.EUS:kpatch-patch-4_18_0-147_13_2-debuginfo-0:1-6.el8_1.x86_64", "BaseOS-8.1.0.Z.EUS:kpatch-patch-4_18_0-147_13_2-debugsource-0:1-6.el8_1.ppc64le", 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"BaseOS-8.1.0.Z.EUS:kpatch-patch-4_18_0-147_8_1-0:1-8.el8_1.ppc64le", "BaseOS-8.1.0.Z.EUS:kpatch-patch-4_18_0-147_8_1-0:1-8.el8_1.src", "BaseOS-8.1.0.Z.EUS:kpatch-patch-4_18_0-147_8_1-0:1-8.el8_1.x86_64" ] } ], "threats": [ { "category": "impact", "details": "Important" } ], "title": "kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c" } ] }
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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.