GHSA-M77W-6VJW-WH2F

Vulnerability from github – Published: 2023-10-03 18:30 – Updated: 2025-10-22 00:32
VLAI?
Details

A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with elevated privileges.

Severity ?
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2023-4911"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-122",
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-10-03T18:15:10Z",
    "severity": "HIGH"
  },
  "details": "A buffer overflow was discovered in the GNU C Library\u0027s dynamic loader ld.so while processing the GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with elevated privileges.",
  "id": "GHSA-m77w-6vjw-wh2f",
  "modified": "2025-10-22T00:32:51Z",
  "published": "2023-10-03T18:30:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-4911"
    },
    {
      "type": "WEB",
      "url": "https://www.qualys.com/cve-2023-4911"
    },
    {
      "type": "WEB",
      "url": "https://www.qualys.com/2023/10/03/cve-2023-4911/looney-tunables-local-privilege-escalation-glibc-ld-so.txt"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2023/dsa-5514"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-4911"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20231013-0006"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202310-03"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NDAQWHTSVOCOZ5K6KPIWKRT3JX4RTZUR"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DFG4P76UHHZEWQ26FWBXG76N2QLKKPZA"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4DBUQRRPB47TC3NJOUIBVWUGFHBJAFDL"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2238352"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2023-4911"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2024:0033"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2023:5476"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2023:5455"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2023:5454"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2023:5453"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHBA-2024:2413"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/174986/glibc-ld.so-Local-Privilege-Escalation.html"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/176288/Glibc-Tunables-Privilege-Escalation.html"
    },
    {
      "type": "WEB",
      "url": "http://seclists.org/fulldisclosure/2023/Oct/11"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2023/10/03/2"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2023/10/03/3"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2023/10/05/1"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2023/10/13/11"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2023/10/14/3"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2023/10/14/5"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2023/10/14/6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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