ubuntu-cve-2020-10543
Vulnerability from osv_ubuntu
Published
2020-06-01 00:00
Modified
2026-04-22 07:39
Summary
Details
Perl before 5.30.3 on 32-bit platforms allows a heap-based buffer overflow because nested regular expression quantifiers have an integer overflow. An application written in Perl would only be vulnerable to this flaw if it evaluates regular expressions supplied by the attacker. Evaluating regular expressions in this fashion is known to be dangerous since the regular expression engine does not protect against denial of service attacks in this usage scenario. Additionally, the target system needs a sufficient amount of memory to allocate partial expansions of the nested quantifiers prior to the overflow occurring. This requirement is unlikely to be met on 64bit systems.]
Severity
8.2 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libcgi-fast-perl",
"binary_version": "5.18.2-2ubuntu1.7+esm3"
},
{
"binary_name": "libperl5.18",
"binary_version": "5.18.2-2ubuntu1.7+esm3"
},
{
"binary_name": "perl",
"binary_version": "5.18.2-2ubuntu1.7+esm3"
},
{
"binary_name": "perl-base",
"binary_version": "5.18.2-2ubuntu1.7+esm3"
},
{
"binary_name": "perl-debug",
"binary_version": "5.18.2-2ubuntu1.7+esm3"
},
{
"binary_name": "perl-modules",
"binary_version": "5.18.2-2ubuntu1.7+esm3"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "perl",
"purl": "pkg:deb/ubuntu/perl@5.18.2-2ubuntu1.7+esm3?arch=source\u0026distro=trusty/esm"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.18.2-2ubuntu1.7+esm3"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.14.2-21build1",
"5.18.1-4",
"5.18.1-4build1",
"5.18.1-5",
"5.18.2-2",
"5.18.2-2ubuntu1",
"5.18.2-2ubuntu1.1",
"5.18.2-2ubuntu1.3",
"5.18.2-2ubuntu1.4",
"5.18.2-2ubuntu1.6",
"5.18.2-2ubuntu1.7"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libperl5.22",
"binary_version": "5.22.1-9ubuntu0.9"
},
{
"binary_name": "perl",
"binary_version": "5.22.1-9ubuntu0.9"
},
{
"binary_name": "perl-base",
"binary_version": "5.22.1-9ubuntu0.9"
},
{
"binary_name": "perl-debug",
"binary_version": "5.22.1-9ubuntu0.9"
},
{
"binary_name": "perl-modules-5.22",
"binary_version": "5.22.1-9ubuntu0.9"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "perl",
"purl": "pkg:deb/ubuntu/perl@5.22.1-9ubuntu0.9?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.22.1-9ubuntu0.9"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.20.2-6",
"5.22.1-3",
"5.22.1-4",
"5.22.1-5",
"5.22.1-7",
"5.22.1-8",
"5.22.1-9",
"5.22.1-9ubuntu0.2",
"5.22.1-9ubuntu0.3",
"5.22.1-9ubuntu0.5",
"5.22.1-9ubuntu0.6"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libperl5.26",
"binary_version": "5.26.1-6ubuntu0.5"
},
{
"binary_name": "perl",
"binary_version": "5.26.1-6ubuntu0.5"
},
{
"binary_name": "perl-base",
"binary_version": "5.26.1-6ubuntu0.5"
},
{
"binary_name": "perl-debug",
"binary_version": "5.26.1-6ubuntu0.5"
},
{
"binary_name": "perl-modules-5.26",
"binary_version": "5.26.1-6ubuntu0.5"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "perl",
"purl": "pkg:deb/ubuntu/perl@5.26.1-6ubuntu0.5?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.26.1-6ubuntu0.5"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.26.0-8ubuntu1",
"5.26.1-2ubuntu1",
"5.26.1-3",
"5.26.1-4",
"5.26.1-4build1",
"5.26.1-5",
"5.26.1-6",
"5.26.1-6ubuntu0.1",
"5.26.1-6ubuntu0.2",
"5.26.1-6ubuntu0.3"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libperl5.30",
"binary_version": "5.30.0-9ubuntu0.2"
},
{
"binary_name": "perl",
"binary_version": "5.30.0-9ubuntu0.2"
},
{
"binary_name": "perl-base",
"binary_version": "5.30.0-9ubuntu0.2"
},
{
"binary_name": "perl-debug",
"binary_version": "5.30.0-9ubuntu0.2"
},
{
"binary_name": "perl-modules-5.30",
"binary_version": "5.30.0-9ubuntu0.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "perl",
"purl": "pkg:deb/ubuntu/perl@5.30.0-9ubuntu0.2?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.30.0-9ubuntu0.2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.28.1-6build1",
"5.30.0-7",
"5.30.0-9",
"5.30.0-9build1"
]
}
],
"aliases": [],
"details": "Perl before 5.30.3 on 32-bit platforms allows a heap-based buffer overflow because nested regular expression quantifiers have an integer overflow. An application written in Perl would only be vulnerable to this flaw if it evaluates regular expressions supplied by the attacker. Evaluating regular expressions in this fashion is known to be dangerous since the regular expression engine does not protect against denial of service attacks in this usage scenario. Additionally, the target system needs a sufficient amount of memory to allocate partial expansions of the nested quantifiers prior to the overflow occurring. This requirement is unlikely to be met on 64bit systems.]",
"id": "UBUNTU-CVE-2020-10543",
"modified": "2026-04-22T07:39:20Z",
"published": "2020-06-01T00:00:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-10543"
},
{
"type": "REPORT",
"url": "https://metacpan.org/pod/release/XSAWYERX/perl-5.28.3/pod/perldelta.pod"
},
{
"type": "REPORT",
"url": "https://metacpan.org/pod/release/XSAWYERX/perl-5.30.3/pod/perldelta.pod"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-4602-1"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-4602-2"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-10543"
}
],
"related": [
"USN-4602-1",
"USN-4602-2"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2020-10543"
]
}
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…