perl — security advisory
The Perl_reg_numbered_buff_fetch function in Perl 5.10.0, 5.12.0, 5.14.0, and other versions, when running with debugging enabled, allows context-dependent attackers to cause a denial of service (assertion failure and application exit) via crafted input that is not properly handled when using certain regular expressions, as demonstrated by causing SpamAssassin and OCSInventory to crash.
- Products
- perl
- Affected versions
- Not specified
- Fixed versions
- 5.20.1-1
- CVEs
- CVE-2010-4777
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 22:41 UTC · Revision 1
Source evidence
The Perl_reg_numbered_buff_fetch function in Perl 5.10.0, 5.12.0, 5.14.0, and other versions, when running with debugging enabled, allows context-dependent attackers to cause a denial of service (assertion failure and application exit) via crafted input that is not properly handled when using certain regular expressions, as demonstrated by causing SpamAssassin and OCSInventory to crash.
osv:DEBIAN-CVE-2010-4777
perl
Fixed versions: 5.20.1-1
perl
Fixed versions: 5.20.1-1
perl
Fixed versions: 5.20.1-1
Complete source record
{
"id": "004745779d02f14ffdd5f35fd5ae643d8635bdd917b0a7169a5728e805b86c73",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2010-4777",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2010-4777",
"summary": "The Perl_reg_numbered_buff_fetch function in Perl 5.10.0, 5.12.0, 5.14.0, and other versions, when running with debugging enabled, allows context-dependent attackers to cause a denial of service (assertion failure and application exit) via crafted input that is not properly handled when using certain regular expressions, as demonstrated by causing SpamAssassin and OCSInventory to crash.",
"evidence": "osv:DEBIAN-CVE-2010-4777",
"products": [
{
"name": {
"value": "perl",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.20.1-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "perl",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.20.1-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "perl",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.20.1-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "DEBIAN-CVE-2010-4777",
"aliases": [
"DEBIAN-CVE-2010-4777"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.20.1-1"
}
]
}
],
"package": {
"name": "perl",
"purl": "pkg:deb/debian/perl?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2010-4777.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.20.1-1"
}
]
}
],
"package": {
"name": "perl",
"purl": "pkg:deb/debian/perl?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2010-4777.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.20.1-1"
}
]
}
],
"package": {
"name": "perl",
"purl": "pkg:deb/debian/perl?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2010-4777.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
}
],
"modified": "2026-10-23T17:47:27.451047507Z",
"provider": "osv",
"upstream": [
"CVE-2010-4777"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2010-4777"
]
},
"related_cves": [
{
"value": "CVE-2010-4777",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 417030,
"published_at": "2014-02-10T18:15:08.967+00:00"
}