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vuln-ubuntu/data/osv/usn/USN-6409-1.json
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{
"schema_version": "1.7.0",
"id": "USN-6409-1",
"summary": "glibc vulnerabilities",
"details": "It was discovered that the GNU C Library incorrectly handled the\nGLIBC_TUNABLES environment variable. An attacker could possibly use this\nissue to perform a privilege escalation attack. (CVE-2023-4911)\n\nIt was discovered that the GNU C Library incorrectly handled certain DNS\nresponses when the system was configured in no-aaaa mode. A remote attacker\ncould possibly use this issue to cause the GNU C Library to crash,\nresulting in a denial of service. This issue only affected Ubuntu 23.04.\n(CVE-2023-4527)\n",
"aliases": [],
"upstream": [
"UBUNTU-CVE-2023-4527",
"UBUNTU-CVE-2023-4911"
],
"related": [],
"published": "2023-10-03T18:04:23Z",
"modified": "2026-04-22T07:37:06Z",
"affected": [
{
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "glibc",
"purl": "pkg:deb/ubuntu/glibc@2.35-0ubuntu3.4?arch=source&distro=jammy"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.35-0ubuntu3.4"
}
]
}
],
"versions": [
"2.34-0ubuntu3",
"2.35-0ubuntu1",
"2.35-0ubuntu3",
"2.35-0ubuntu3.1",
"2.35-0ubuntu3.3"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "glibc-source",
"binary_version": "2.35-0ubuntu3.4"
},
{
"binary_name": "libc-bin",
"binary_version": "2.35-0ubuntu3.4"
},
{
"binary_name": "libc-dev-bin",
"binary_version": "2.35-0ubuntu3.4"
},
{
"binary_name": "libc-devtools",
"binary_version": "2.35-0ubuntu3.4"
},
{
"binary_name": "libc6",
"binary_version": "2.35-0ubuntu3.4"
},
{
"binary_name": "libc6-amd64",
"binary_version": "2.35-0ubuntu3.4"
},
{
"binary_name": "libc6-dev-amd64",
"binary_version": "2.35-0ubuntu3.4"
},
{
"binary_name": "libc6-dev-i386",
"binary_version": "2.35-0ubuntu3.4"
},
{
"binary_name": "libc6-dev-s390",
"binary_version": "2.35-0ubuntu3.4"
},
{
"binary_name": "libc6-dev-x32",
"binary_version": "2.35-0ubuntu3.4"
},
{
"binary_name": "libc6-i386",
"binary_version": "2.35-0ubuntu3.4"
},
{
"binary_name": "libc6-prof",
"binary_version": "2.35-0ubuntu3.4"
},
{
"binary_name": "libc6-s390",
"binary_version": "2.35-0ubuntu3.4"
},
{
"binary_name": "libc6-x32",
"binary_version": "2.35-0ubuntu3.4"
},
{
"binary_name": "locales",
"binary_version": "2.35-0ubuntu3.4"
},
{
"binary_name": "locales-all",
"binary_version": "2.35-0ubuntu3.4"
},
{
"binary_name": "nscd",
"binary_version": "2.35-0ubuntu3.4"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:22.04:LTS",
"cves": [
{
"id": "CVE-2023-4911",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "high"
}
]
}
]
}
}
}
],
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-6409-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2023-4527"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2023-4911"
}
]
}