rhsa-2023_7052
Vulnerability from csaf_redhat
Published
2023-11-14 15:51
Modified
2024-12-02 06:58
Summary
Red Hat Security Advisory: libreswan security update

Notes

Topic
An update for libreswan 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
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: Invalid IKEv2 REKEY proposal causes restart (CVE-2023-38710) * libreswan: Invalid IKEv1 Quick Mode ID causes restart (CVE-2023-38711) * libreswan: Invalid IKEv1 repeat IKE SA delete causes crash and restart (CVE-2023-38712) 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 8.9 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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  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "X1AOxiang"
          ]
        }
      ],
      "cve": "CVE-2023-38710",
      "cwe": {
        "id": "CWE-617",
        "name": "Reachable Assertion"
      },
      "discovery_date": "2023-07-25T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2225368"
        }
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      "notes": [
        {
          "category": "description",
          "text": "An assertion failure flaw was found in the Libreswan package that occurs when processing IKEv2 REKEY requests. When an IKEv2 Child SA REKEY packet contains an invalid IPsec protocol ID number of 0 or 1, an error notification INVALID_SPI is sent back. The notify payload\u0027s protocol ID is copied from the incoming packet, but the code that verifies outgoing packets fails an assertion that the protocol ID must be ESP (2) or AH(3). This flaw allows a malicious client or attacker to send a malformed IKEv2 REKEY packet, causing a crash and restarting the libreswan pluto daemon. When sent continuously, this could lead to a denial of service attack.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "libreswan: Invalid IKEv2 REKEY proposal causes restart",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "IKEv2 REKEY requests are only processed when received from authenticated peers, limiting the scope of possible attackers to peers who have successfully authenticated.",
          "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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          "summary": "RHBZ#2225368",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2225368"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2023-38710",
          "url": "https://www.cve.org/CVERecord?id=CVE-2023-38710"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-38710",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-38710"
        },
        {
          "category": "external",
          "summary": "https://github.com/libreswan/libreswan/releases/tag/v4.12",
          "url": "https://github.com/libreswan/libreswan/releases/tag/v4.12"
        },
        {
          "category": "external",
          "summary": "https://libreswan.org/security/CVE-2023-38710/CVE-2023-38710.txt",
          "url": "https://libreswan.org/security/CVE-2023-38710/CVE-2023-38710.txt"
        }
      ],
      "release_date": "2023-08-08T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2023-11-14T15:51:00+00:00",
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        }
      ],
      "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",
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        }
      ],
      "title": "libreswan: Invalid IKEv2 REKEY proposal causes restart"
    },
    {
      "cve": "CVE-2023-38711",
      "cwe": {
        "id": "CWE-476",
        "name": "NULL Pointer Dereference"
      },
      "discovery_date": "2023-06-19T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2215952"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A NULL pointer dereference flaw was found in Libreswan when processing IKEv1 Quick Mode requests. When an IKEv1 Quick Mode connection configured with ID_IPV4_ADDR or ID_IPV6_ADDR receives an IDcr payload with ID_FQDN, it triggers a NULL pointer dereference error. This flaw allows a malicious client or attacker to send a malformed IKEv1 Quick Mode packet, causing a crash and restart of the libreswan pluto daemon. When sent continuously, this issue leads to a denial of service attack.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "libreswan: Invalid IKEv1 Quick Mode ID causes restart",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "IKEv1 Quick Mode requests are only processed when received from authenticated peers, limiting the scope of possible attackers to peers who have successfully authenticated.",
          "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": {
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      },
      "references": [
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          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2023-38711"
        },
        {
          "category": "external",
          "summary": "RHBZ#2215952",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2215952"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2023-38711",
          "url": "https://www.cve.org/CVERecord?id=CVE-2023-38711"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-38711",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-38711"
        },
        {
          "category": "external",
          "summary": "https://github.com/libreswan/libreswan/releases/tag/v4.12",
          "url": "https://github.com/libreswan/libreswan/releases/tag/v4.12"
        },
        {
          "category": "external",
          "summary": "https://libreswan.org/security/CVE-2023-38711/CVE-2023-38711.txt",
          "url": "https://libreswan.org/security/CVE-2023-38711/CVE-2023-38711.txt"
        }
      ],
      "release_date": "2023-08-08T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2023-11-14T15:51:00+00:00",
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            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
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            "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",
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      ],
      "title": "libreswan: Invalid IKEv1 Quick Mode ID causes restart"
    },
    {
      "cve": "CVE-2023-38712",
      "cwe": {
        "id": "CWE-476",
        "name": "NULL Pointer Dereference"
      },
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      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2225369"
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          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "libreswan: Invalid IKEv1 repeat IKE SA delete causes crash and restart",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "IKEv1 Delete/Notify requests are only processed when received from authenticated peers, limiting the scope of possible attackers to peers who have successfully authenticated.",
          "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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          "category": "external",
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        {
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          "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-38712"
        },
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            "confidentialityImpact": "NONE",
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            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "libreswan: Invalid IKEv1 repeat IKE SA delete causes crash and restart"
    }
  ]
}


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