rhsa-2021:2657
Vulnerability from csaf_redhat
Published
2021-07-06 15:41
Modified
2024-11-22 17:14
Summary
Red Hat Security Advisory: linuxptp security update

Notes

Topic
An update for linuxptp is now available for Red Hat Enterprise Linux 8.2 Extended Update Support. 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
The linuxptp packages provide Precision Time Protocol (PTP) implementation for Linux according to IEEE standard 1588 for Linux. The dual design goals are to provide a robust implementation of the standard and to use the most relevant and modern Application Programming Interfaces (API) offered by the Linux kernel. Security Fix(es): * linuxptp: missing length check of forwarded messages (CVE-2021-3570) 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.


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      "cwe": {
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        "name": "Improper Restriction of Operations within the Bounds of a Memory Buffer"
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          "category": "description",
          "text": "A flaw was found in the ptp4l program of the linuxptp package. A missing length check when forwarding a PTP message between ports allows a remote attacker to cause an information leak, crash, or potentially remote code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.",
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          "text": "linuxptp: missing length check of forwarded messages",
          "title": "Vulnerability summary"
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        {
          "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"
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          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1966240"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2021-3570",
          "url": "https://www.cve.org/CVERecord?id=CVE-2021-3570"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2021-3570",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3570"
        }
      ],
      "release_date": "2021-07-05T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2021-07-06T15:41:45+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",
          "product_ids": [
            "AppStream-8.2.0.Z.EUS:linuxptp-0:2.0-4.el8_2.1.aarch64",
            "AppStream-8.2.0.Z.EUS:linuxptp-0:2.0-4.el8_2.1.ppc64le",
            "AppStream-8.2.0.Z.EUS:linuxptp-0:2.0-4.el8_2.1.s390x",
            "AppStream-8.2.0.Z.EUS:linuxptp-0:2.0-4.el8_2.1.src",
            "AppStream-8.2.0.Z.EUS:linuxptp-0:2.0-4.el8_2.1.x86_64",
            "AppStream-8.2.0.Z.EUS:linuxptp-debuginfo-0:2.0-4.el8_2.1.aarch64",
            "AppStream-8.2.0.Z.EUS:linuxptp-debuginfo-0:2.0-4.el8_2.1.ppc64le",
            "AppStream-8.2.0.Z.EUS:linuxptp-debuginfo-0:2.0-4.el8_2.1.s390x",
            "AppStream-8.2.0.Z.EUS:linuxptp-debuginfo-0:2.0-4.el8_2.1.x86_64",
            "AppStream-8.2.0.Z.EUS:linuxptp-debugsource-0:2.0-4.el8_2.1.aarch64",
            "AppStream-8.2.0.Z.EUS:linuxptp-debugsource-0:2.0-4.el8_2.1.ppc64le",
            "AppStream-8.2.0.Z.EUS:linuxptp-debugsource-0:2.0-4.el8_2.1.s390x",
            "AppStream-8.2.0.Z.EUS:linuxptp-debugsource-0:2.0-4.el8_2.1.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2021:2657"
        },
        {
          "category": "workaround",
          "details": "Only attackers that can connect to the `ptp4l` service can exploit this vulnerability. If `ptp4l` is bound only to a private network interface, or is protected by firewall rules to block incoming PTP management messages, the attack surface is correspondingly limited. When using the UDP IPv4 or IPv6 network transport, the following tcpdump filter can be used to detect PTP management messages:\n\n```\n(port 319 or port 320) and udp[8]\u00260xf=0xd\n```",
          "product_ids": [
            "AppStream-8.2.0.Z.EUS:linuxptp-0:2.0-4.el8_2.1.aarch64",
            "AppStream-8.2.0.Z.EUS:linuxptp-0:2.0-4.el8_2.1.ppc64le",
            "AppStream-8.2.0.Z.EUS:linuxptp-0:2.0-4.el8_2.1.s390x",
            "AppStream-8.2.0.Z.EUS:linuxptp-0:2.0-4.el8_2.1.src",
            "AppStream-8.2.0.Z.EUS:linuxptp-0:2.0-4.el8_2.1.x86_64",
            "AppStream-8.2.0.Z.EUS:linuxptp-debuginfo-0:2.0-4.el8_2.1.aarch64",
            "AppStream-8.2.0.Z.EUS:linuxptp-debuginfo-0:2.0-4.el8_2.1.ppc64le",
            "AppStream-8.2.0.Z.EUS:linuxptp-debuginfo-0:2.0-4.el8_2.1.s390x",
            "AppStream-8.2.0.Z.EUS:linuxptp-debuginfo-0:2.0-4.el8_2.1.x86_64",
            "AppStream-8.2.0.Z.EUS:linuxptp-debugsource-0:2.0-4.el8_2.1.aarch64",
            "AppStream-8.2.0.Z.EUS:linuxptp-debugsource-0:2.0-4.el8_2.1.ppc64le",
            "AppStream-8.2.0.Z.EUS:linuxptp-debugsource-0:2.0-4.el8_2.1.s390x",
            "AppStream-8.2.0.Z.EUS:linuxptp-debugsource-0:2.0-4.el8_2.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "AppStream-8.2.0.Z.EUS:linuxptp-0:2.0-4.el8_2.1.aarch64",
            "AppStream-8.2.0.Z.EUS:linuxptp-0:2.0-4.el8_2.1.ppc64le",
            "AppStream-8.2.0.Z.EUS:linuxptp-0:2.0-4.el8_2.1.s390x",
            "AppStream-8.2.0.Z.EUS:linuxptp-0:2.0-4.el8_2.1.src",
            "AppStream-8.2.0.Z.EUS:linuxptp-0:2.0-4.el8_2.1.x86_64",
            "AppStream-8.2.0.Z.EUS:linuxptp-debuginfo-0:2.0-4.el8_2.1.aarch64",
            "AppStream-8.2.0.Z.EUS:linuxptp-debuginfo-0:2.0-4.el8_2.1.ppc64le",
            "AppStream-8.2.0.Z.EUS:linuxptp-debuginfo-0:2.0-4.el8_2.1.s390x",
            "AppStream-8.2.0.Z.EUS:linuxptp-debuginfo-0:2.0-4.el8_2.1.x86_64",
            "AppStream-8.2.0.Z.EUS:linuxptp-debugsource-0:2.0-4.el8_2.1.aarch64",
            "AppStream-8.2.0.Z.EUS:linuxptp-debugsource-0:2.0-4.el8_2.1.ppc64le",
            "AppStream-8.2.0.Z.EUS:linuxptp-debugsource-0:2.0-4.el8_2.1.s390x",
            "AppStream-8.2.0.Z.EUS:linuxptp-debugsource-0:2.0-4.el8_2.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "linuxptp: missing length check of forwarded messages"
    }
  ]
}


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