suse-su-2025:03368-1
Vulnerability from csaf_suse
Published
2025-09-26 10:53
Modified
2025-09-26 10:53
Summary
Security update for libssh

Notes

Title of the patch
Security update for libssh
Description of the patch
This update for libssh fixes the following issues: - CVE-2025-8277: memory exhaustion leading to client-side DoS due to improper memory management when KEX process is repeated with incorrect guesses (bsc#1249375). - CVE-2025-8114: NULL pointer dereference when an allocation error happens during the calculation of the KEX session ID (bsc#1246974).
Patchnames
SUSE-2025-3368,SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2025-3368
Terms of use
CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).


To clipboard 

{
  "document": {
    "aggregate_severity": {
      "namespace": "https://www.suse.com/support/security/rating/",
      "text": "moderate"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright 2024 SUSE LLC. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "Security update for libssh",
        "title": "Title of the patch"
      },
      {
        "category": "description",
        "text": "This update for libssh fixes the following issues:\n\n- CVE-2025-8277: memory exhaustion leading to client-side DoS due to improper memory management when KEX process is\n  repeated with incorrect guesses (bsc#1249375).\n- CVE-2025-8114: NULL pointer dereference when an allocation error happens during the calculation of the KEX session ID\n  (bsc#1246974).\n",
        "title": "Description of the patch"
      },
      {
        "category": "details",
        "text": "SUSE-2025-3368,SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2025-3368",
        "title": "Patchnames"
      },
      {
        "category": "legal_disclaimer",
        "text": "CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).",
        "title": "Terms of use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://www.suse.com/support/security/contact/",
      "name": "SUSE Product Security Team",
      "namespace": "https://www.suse.com/"
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      },
      {
        "category": "self",
        "summary": "URL of this CSAF notice",
        "url": "https://ftp.suse.com/pub/projects/security/csaf/suse-su-2025_03368-1.json"
      },
      {
        "category": "self",
        "summary": "URL for SUSE-SU-2025:03368-1",
        "url": "https://www.suse.com/support/update/announcement/2025/suse-su-202503368-1/"
      },
      {
        "category": "self",
        "summary": "E-Mail link for SUSE-SU-2025:03368-1",
        "url": "https://lists.suse.com/pipermail/sle-updates/2025-September/041851.html"
      },
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        "url": "https://bugzilla.suse.com/1246974"
      },
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        "category": "self",
        "summary": "SUSE Bug 1249375",
        "url": "https://bugzilla.suse.com/1249375"
      },
      {
        "category": "self",
        "summary": "SUSE CVE CVE-2025-8114 page",
        "url": "https://www.suse.com/security/cve/CVE-2025-8114/"
      },
      {
        "category": "self",
        "summary": "SUSE CVE CVE-2025-8277 page",
        "url": "https://www.suse.com/security/cve/CVE-2025-8277/"
      }
    ],
    "title": "Security update for libssh",
    "tracking": {
      "current_release_date": "2025-09-26T10:53:33Z",
      "generator": {
        "date": "2025-09-26T10:53:33Z",
        "engine": {
          "name": "cve-database.git:bin/generate-csaf.pl",
          "version": "1"
        }
      },
      "id": "SUSE-SU-2025:03368-1",
      "initial_release_date": "2025-09-26T10:53:33Z",
      "revision_history": [
        {
          "date": "2025-09-26T10:53:33Z",
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          "summary": "Current version"
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  "vulnerabilities": [
    {
      "cve": "CVE-2025-8114",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2025-8114"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "A flaw was found in libssh, a library that implements the SSH protocol. When calculating the session ID during the key exchange (KEX) process, an allocation failure in cryptographic functions may lead to a NULL pointer dereference. This issue can cause the client or server to crash.",
          "title": "CVE description"
        }
      ],
      "product_status": {
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          "SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:libssh4-0.9.8-3.18.1.x86_64",
          "SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:libssh4-32bit-0.9.8-3.18.1.x86_64"
        ]
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        },
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            "SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:libssh4-32bit-0.9.8-3.18.1.x86_64"
          ]
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      "scores": [
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          "cvss_v3": {
            "baseScore": 4.7,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
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            "SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:libssh-devel-0.9.8-3.18.1.x86_64",
            "SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:libssh4-0.9.8-3.18.1.x86_64",
            "SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:libssh4-32bit-0.9.8-3.18.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2025-09-26T10:53:33Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2025-8114"
    },
    {
      "cve": "CVE-2025-8277",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2025-8277"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "A flaw was found in libssh\u0027s handling of key exchange (KEX) processes when a client repeatedly sends incorrect KEX guesses. The library fails to free memory during these rekey operations, which can gradually exhaust system memory. This issue can lead to crashes on the client side, particularly when using libgcrypt, which impacts application stability and availability.",
          "title": "CVE description"
        }
      ],
      "product_status": {
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          "SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:libssh-devel-0.9.8-3.18.1.x86_64",
          "SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:libssh4-0.9.8-3.18.1.x86_64",
          "SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:libssh4-32bit-0.9.8-3.18.1.x86_64"
        ]
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      "references": [
        {
          "category": "external",
          "summary": "CVE-2025-8277",
          "url": "https://www.suse.com/security/cve/CVE-2025-8277"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1249375 for CVE-2025-8277",
          "url": "https://bugzilla.suse.com/1249375"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
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            "SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:libssh4-0.9.8-3.18.1.x86_64",
            "SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:libssh4-32bit-0.9.8-3.18.1.x86_64"
          ]
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            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          },
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            "SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:libssh-devel-0.9.8-3.18.1.x86_64",
            "SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:libssh4-0.9.8-3.18.1.x86_64",
            "SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:libssh4-32bit-0.9.8-3.18.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2025-09-26T10:53:33Z",
          "details": "low"
        }
      ],
      "title": "CVE-2025-8277"
    }
  ]
}


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