rhsa-2024_4431
Vulnerability from csaf_redhat
Published
2024-07-09 12:55
Modified
2024-11-21 21:12
Summary
Red Hat Security Advisory: libreswan security update

Notes

Topic
An update for libreswan is now available for Red Hat Enterprise Linux 9.2 Extended Update Support. 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
Libreswan is an implementation of IPsec and IKE for Linux. IPsec is the Internet Protocol Security and uses strong cryptography to provide both authentication and encryption services. These services allow you to build secure tunnels through untrusted networks such as virtual private network (VPN). Security Fix(es): * libreswan: IKEv1 default AH/ESP responder can crash and restart (CVE-2024-3652) 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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  "vulnerabilities": [
    {
      "cve": "CVE-2024-3652",
      "cwe": {
        "id": "CWE-617",
        "name": "Reachable Assertion"
      },
      "discovery_date": "2024-04-11T00:00:00+00:00",
      "ids": [
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          "system_name": "Red Hat Bugzilla ID",
          "text": "2274448"
        }
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      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Libreswan, where it was identified to contain an assertion failure issue in the compute_proto_keymat() function. The vulnerability can be exploited when an IKEv1 connection is loaded with an AH/ESP default setting when no esp= line is present in the connection. This flaw allows an authenticated attacker to send the bogus AES-GMAC proposal request, triggering the issue and causing Libreswan to crash and restart. When this connection is automatically added on startup using the auto= keyword, it can cause repeated crashes, leading to a denial of service. No remote code execution is possible.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "libreswan: IKEv1 default AH/ESP responder can crash and restart",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "The CVE-2024-3652 vulnerability in Libreswan is classified as a moderate severity issue due to its limited scope and impact. While the vulnerability can lead to Denial of Service (DoS) by causing the Libreswan service to crash and restart, it does not allow for Remote Code Execution or expose sensitive data. Additionally, the exploitation of this vulnerability requires specific conditions to be met: an IKEv1 connection loaded without an esp= line and the peer to have authenticated itself. Furthermore, IKEv2 connections are not vulnerable to this issue.",
          "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"
        }
      ],
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          "AppStream-9.2.0.Z.EUS:libreswan-debugsource-0:4.9-5.el9_2.2.ppc64le",
          "AppStream-9.2.0.Z.EUS:libreswan-debugsource-0:4.9-5.el9_2.2.s390x",
          "AppStream-9.2.0.Z.EUS:libreswan-debugsource-0:4.9-5.el9_2.2.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2024-3652"
        },
        {
          "category": "external",
          "summary": "RHBZ#2274448",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2274448"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2024-3652",
          "url": "https://www.cve.org/CVERecord?id=CVE-2024-3652"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2024-3652",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-3652"
        },
        {
          "category": "external",
          "summary": "https://libreswan.org/security/CVE-2024-3652",
          "url": "https://libreswan.org/security/CVE-2024-3652"
        }
      ],
      "release_date": "2024-04-15T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2024-07-09T12:55:37+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-9.2.0.Z.EUS:libreswan-0:4.9-5.el9_2.2.aarch64",
            "AppStream-9.2.0.Z.EUS:libreswan-0:4.9-5.el9_2.2.ppc64le",
            "AppStream-9.2.0.Z.EUS:libreswan-0:4.9-5.el9_2.2.s390x",
            "AppStream-9.2.0.Z.EUS:libreswan-0:4.9-5.el9_2.2.src",
            "AppStream-9.2.0.Z.EUS:libreswan-0:4.9-5.el9_2.2.x86_64",
            "AppStream-9.2.0.Z.EUS:libreswan-debuginfo-0:4.9-5.el9_2.2.aarch64",
            "AppStream-9.2.0.Z.EUS:libreswan-debuginfo-0:4.9-5.el9_2.2.ppc64le",
            "AppStream-9.2.0.Z.EUS:libreswan-debuginfo-0:4.9-5.el9_2.2.s390x",
            "AppStream-9.2.0.Z.EUS:libreswan-debuginfo-0:4.9-5.el9_2.2.x86_64",
            "AppStream-9.2.0.Z.EUS:libreswan-debugsource-0:4.9-5.el9_2.2.aarch64",
            "AppStream-9.2.0.Z.EUS:libreswan-debugsource-0:4.9-5.el9_2.2.ppc64le",
            "AppStream-9.2.0.Z.EUS:libreswan-debugsource-0:4.9-5.el9_2.2.s390x",
            "AppStream-9.2.0.Z.EUS:libreswan-debugsource-0:4.9-5.el9_2.2.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2024:4431"
        },
        {
          "category": "workaround",
          "details": "An esp= line using a common IKEv1 algorithm list can be added to all IKEv1 based connections. An example of such an esp= line could be:\n~~~\nesp=aes-sha2_512,aes-sha1,aes-sha2_256,aes-md5,3des-sha1,3des-md5\n~~~",
          "product_ids": [
            "AppStream-9.2.0.Z.EUS:libreswan-0:4.9-5.el9_2.2.aarch64",
            "AppStream-9.2.0.Z.EUS:libreswan-0:4.9-5.el9_2.2.ppc64le",
            "AppStream-9.2.0.Z.EUS:libreswan-0:4.9-5.el9_2.2.s390x",
            "AppStream-9.2.0.Z.EUS:libreswan-0:4.9-5.el9_2.2.src",
            "AppStream-9.2.0.Z.EUS:libreswan-0:4.9-5.el9_2.2.x86_64",
            "AppStream-9.2.0.Z.EUS:libreswan-debuginfo-0:4.9-5.el9_2.2.aarch64",
            "AppStream-9.2.0.Z.EUS:libreswan-debuginfo-0:4.9-5.el9_2.2.ppc64le",
            "AppStream-9.2.0.Z.EUS:libreswan-debuginfo-0:4.9-5.el9_2.2.s390x",
            "AppStream-9.2.0.Z.EUS:libreswan-debuginfo-0:4.9-5.el9_2.2.x86_64",
            "AppStream-9.2.0.Z.EUS:libreswan-debugsource-0:4.9-5.el9_2.2.aarch64",
            "AppStream-9.2.0.Z.EUS:libreswan-debugsource-0:4.9-5.el9_2.2.ppc64le",
            "AppStream-9.2.0.Z.EUS:libreswan-debugsource-0:4.9-5.el9_2.2.s390x",
            "AppStream-9.2.0.Z.EUS:libreswan-debugsource-0:4.9-5.el9_2.2.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "AppStream-9.2.0.Z.EUS:libreswan-0:4.9-5.el9_2.2.aarch64",
            "AppStream-9.2.0.Z.EUS:libreswan-0:4.9-5.el9_2.2.ppc64le",
            "AppStream-9.2.0.Z.EUS:libreswan-0:4.9-5.el9_2.2.s390x",
            "AppStream-9.2.0.Z.EUS:libreswan-0:4.9-5.el9_2.2.src",
            "AppStream-9.2.0.Z.EUS:libreswan-0:4.9-5.el9_2.2.x86_64",
            "AppStream-9.2.0.Z.EUS:libreswan-debuginfo-0:4.9-5.el9_2.2.aarch64",
            "AppStream-9.2.0.Z.EUS:libreswan-debuginfo-0:4.9-5.el9_2.2.ppc64le",
            "AppStream-9.2.0.Z.EUS:libreswan-debuginfo-0:4.9-5.el9_2.2.s390x",
            "AppStream-9.2.0.Z.EUS:libreswan-debuginfo-0:4.9-5.el9_2.2.x86_64",
            "AppStream-9.2.0.Z.EUS:libreswan-debugsource-0:4.9-5.el9_2.2.aarch64",
            "AppStream-9.2.0.Z.EUS:libreswan-debugsource-0:4.9-5.el9_2.2.ppc64le",
            "AppStream-9.2.0.Z.EUS:libreswan-debugsource-0:4.9-5.el9_2.2.s390x",
            "AppStream-9.2.0.Z.EUS:libreswan-debugsource-0:4.9-5.el9_2.2.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "libreswan: IKEv1 default AH/ESP responder can crash and restart"
    }
  ]
}


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