ubuntu-cve-2021-38185
Vulnerability from osv_ubuntu
Published
2021-08-08 00:15
Modified
2025-07-16 04:57
Summary
Details
GNU cpio through 2.13 allows attackers to execute arbitrary code via a crafted pattern file, because of a dstring.c ds_fgetstr integer overflow that triggers an out-of-bounds heap write. NOTE: it is unclear whether there are common cases where the pattern file, associated with the -E option, is untrusted data.
Severity
7.8 (High)
7.8 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "cpio",
"binary_version": "2.11+dfsg-1ubuntu1.2+esm2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "cpio",
"purl": "pkg:deb/ubuntu/cpio@2.11+dfsg-1ubuntu1.2+esm2?arch=source\u0026distro=trusty/esm"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.11+dfsg-1ubuntu1.2+esm2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.11+dfsg-1ubuntu1",
"2.11+dfsg-1ubuntu1.1",
"2.11+dfsg-1ubuntu1.2",
"2.11+dfsg-1ubuntu1.2+esm1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "cpio",
"binary_version": "2.11+dfsg-5ubuntu1.1+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "cpio",
"purl": "pkg:deb/ubuntu/cpio@2.11+dfsg-5ubuntu1.1+esm1?arch=source\u0026distro=esm-infra/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.11+dfsg-5ubuntu1.1+esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.11+dfsg-4.1ubuntu1",
"2.11+dfsg-5ubuntu1",
"2.11+dfsg-5ubuntu1.1"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "cpio",
"binary_version": "2.12+dfsg-6ubuntu0.18.04.4"
},
{
"binary_name": "cpio-win32",
"binary_version": "2.12+dfsg-6ubuntu0.18.04.4"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "cpio",
"purl": "pkg:deb/ubuntu/cpio@2.12+dfsg-6ubuntu0.18.04.4?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.12+dfsg-6ubuntu0.18.04.4"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.11+dfsg-6",
"2.12+dfsg-6",
"2.12+dfsg-6ubuntu0.18.04.1"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "cpio",
"binary_version": "2.13+dfsg-2ubuntu0.3"
},
{
"binary_name": "cpio-win32",
"binary_version": "2.13+dfsg-2ubuntu0.3"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "cpio",
"purl": "pkg:deb/ubuntu/cpio@2.13+dfsg-2ubuntu0.3?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.13+dfsg-2ubuntu0.3"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.12+dfsg-9",
"2.12+dfsg-9ubuntu1",
"2.13+dfsg-1",
"2.13+dfsg-2"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "cpio",
"binary_version": "2.13+dfsg-4ubuntu4"
},
{
"binary_name": "cpio-win32",
"binary_version": "2.13+dfsg-4ubuntu4"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "cpio",
"purl": "pkg:deb/ubuntu/cpio@2.13+dfsg-4ubuntu4?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.13+dfsg-4ubuntu4"
}
],
"type": "ECOSYSTEM"
}
],
"versions": []
}
],
"aliases": [],
"details": "GNU cpio through 2.13 allows attackers to execute arbitrary code via a crafted pattern file, because of a dstring.c ds_fgetstr integer overflow that triggers an out-of-bounds heap write. NOTE: it is unclear whether there are common cases where the pattern file, associated with the -E option, is untrusted data.",
"id": "UBUNTU-CVE-2021-38185",
"modified": "2025-07-16T04:57:26Z",
"published": "2021-08-08T00:15:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-38185"
},
{
"type": "REPORT",
"url": "https://github.com/fangqyi/cpiopwn"
},
{
"type": "REPORT",
"url": "https://lists.gnu.org/archive/html/bug-cpio/2021-08/msg00000.html"
},
{
"type": "REPORT",
"url": "https://lists.gnu.org/archive/html/bug-cpio/2021-08/msg00002.html"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-5064-1"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-5064-2"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-5064-3"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-38185"
}
],
"related": [
"USN-5064-1",
"USN-5064-2",
"USN-5064-3"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2021-38185"
]
}
Loading…
Loading…
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.
Loading…
Loading…