usn-4954-1
Vulnerability from osv_ubuntu
Published
2021-05-14 00:19
Modified
2026-04-27 14:11
Summary
glibc vulnerabilities
Details
Jason Royes and Samuel Dytrych discovered that the memcpy() implementation for 32 bit ARM processors in the GNU C Library contained an integer underflow vulnerability. An attacker could possibly use this to cause a denial of service (application crash) or execute arbitrary code. (CVE-2020-6096)
It was discovered that the POSIX regex implementation in the GNU C Library did not properly parse alternatives. An attacker could use this to cause a denial of service. (CVE-2009-5155)
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2009-5155",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "negligible",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2020-6096",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:16.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "glibc-source",
"binary_version": "2.23-0ubuntu11.3"
},
{
"binary_name": "libc-bin",
"binary_version": "2.23-0ubuntu11.3"
},
{
"binary_name": "libc-dev-bin",
"binary_version": "2.23-0ubuntu11.3"
},
{
"binary_name": "libc6",
"binary_version": "2.23-0ubuntu11.3"
},
{
"binary_name": "libc6-amd64",
"binary_version": "2.23-0ubuntu11.3"
},
{
"binary_name": "libc6-armel",
"binary_version": "2.23-0ubuntu11.3"
},
{
"binary_name": "libc6-dev-amd64",
"binary_version": "2.23-0ubuntu11.3"
},
{
"binary_name": "libc6-dev-armel",
"binary_version": "2.23-0ubuntu11.3"
},
{
"binary_name": "libc6-dev-i386",
"binary_version": "2.23-0ubuntu11.3"
},
{
"binary_name": "libc6-dev-ppc64",
"binary_version": "2.23-0ubuntu11.3"
},
{
"binary_name": "libc6-dev-s390",
"binary_version": "2.23-0ubuntu11.3"
},
{
"binary_name": "libc6-dev-x32",
"binary_version": "2.23-0ubuntu11.3"
},
{
"binary_name": "libc6-i386",
"binary_version": "2.23-0ubuntu11.3"
},
{
"binary_name": "libc6-pic",
"binary_version": "2.23-0ubuntu11.3"
},
{
"binary_name": "libc6-ppc64",
"binary_version": "2.23-0ubuntu11.3"
},
{
"binary_name": "libc6-s390",
"binary_version": "2.23-0ubuntu11.3"
},
{
"binary_name": "libc6-x32",
"binary_version": "2.23-0ubuntu11.3"
},
{
"binary_name": "locales",
"binary_version": "2.23-0ubuntu11.3"
},
{
"binary_name": "locales-all",
"binary_version": "2.23-0ubuntu11.3"
},
{
"binary_name": "multiarch-support",
"binary_version": "2.23-0ubuntu11.3"
},
{
"binary_name": "nscd",
"binary_version": "2.23-0ubuntu11.3"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "glibc",
"purl": "pkg:deb/ubuntu/glibc@2.23-0ubuntu11.3?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.23-0ubuntu11.3"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.21-0ubuntu4",
"2.21-0ubuntu5",
"2.21-0ubuntu6",
"2.23-0ubuntu1",
"2.23-0ubuntu2",
"2.23-0ubuntu3",
"2.23-0ubuntu4",
"2.23-0ubuntu5",
"2.23-0ubuntu6",
"2.23-0ubuntu7",
"2.23-0ubuntu9",
"2.23-0ubuntu10",
"2.23-0ubuntu11",
"2.23-0ubuntu11.2"
]
}
],
"aliases": [],
"details": "Jason Royes and Samuel Dytrych discovered that the memcpy()\nimplementation for 32 bit ARM processors in the GNU C Library contained\nan integer underflow vulnerability. An attacker could possibly use\nthis to cause a denial of service (application crash) or execute\narbitrary code. (CVE-2020-6096)\n\nIt was discovered that the POSIX regex implementation in the GNU C\nLibrary did not properly parse alternatives. An attacker could use this\nto cause a denial of service. (CVE-2009-5155)\n",
"id": "USN-4954-1",
"modified": "2026-04-27T14:11:27Z",
"published": "2021-05-14T00:19:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-4954-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2009-5155"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-6096"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "glibc vulnerabilities",
"upstream": [
"UBUNTU-CVE-2009-5155",
"UBUNTU-CVE-2020-6096"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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