apache2 — security advisory
protocol.c in the Apache HTTP Server 2.2.x through 2.2.21 does not properly restrict header information during construction of Bad Request (aka 400) error documents, which allows remote attackers to obtain the values of HTTPOnly cookies via vectors involving a (1) long or (2) malformed header in conjunction with crafted web script.
- Products
- apache2
- Affected versions
- Not specified
- Fixed versions
- 2.2.22-1
- CVEs
- CVE-2012-0053
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 23:00 UTC · Revision 1
Source evidence
protocol.c in the Apache HTTP Server 2.2.x through 2.2.21 does not properly restrict header information during construction of Bad Request (aka 400) error documents, which allows remote attackers to obtain the values of HTTPOnly cookies via vectors involving a (1) long or (2) malformed header in conjunction with crafted web script.
osv:DEBIAN-CVE-2012-0053
apache2
Fixed versions: 2.2.22-1
apache2
Fixed versions: 2.2.22-1
apache2
Fixed versions: 2.2.22-1
Complete source record
{
"id": "79b9d7af5f345e54a4e83edfae6d00b8b49e72b03f128741fbe5e5665fb9aaac",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2012-0053",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2012-0053",
"summary": "protocol.c in the Apache HTTP Server 2.2.x through 2.2.21 does not properly restrict header information during construction of Bad Request (aka 400) error documents, which allows remote attackers to obtain the values of HTTPOnly cookies via vectors involving a (1) long or (2) malformed header in conjunction with crafted web script.",
"evidence": "osv:DEBIAN-CVE-2012-0053",
"products": [
{
"name": {
"value": "apache2",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.2.22-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "apache2",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.2.22-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "apache2",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.2.22-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "DEBIAN-CVE-2012-0053",
"aliases": [
"DEBIAN-CVE-2012-0053"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.2.22-1"
}
]
}
],
"package": {
"name": "apache2",
"purl": "pkg:deb/debian/apache2?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2012-0053.json"
},
"ecosystem_specific": {
"urgency": "low"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.2.22-1"
}
]
}
],
"package": {
"name": "apache2",
"purl": "pkg:deb/debian/apache2?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2012-0053.json"
},
"ecosystem_specific": {
"urgency": "low"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.2.22-1"
}
]
}
],
"package": {
"name": "apache2",
"purl": "pkg:deb/debian/apache2?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2012-0053.json"
},
"ecosystem_specific": {
"urgency": "low"
}
}
],
"modified": "2026-10-23T17:47:32.050357605Z",
"provider": "osv",
"upstream": [
"CVE-2012-0053"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2012-0053"
]
},
"related_cves": [
{
"value": "CVE-2012-0053",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 417478,
"published_at": "2012-01-28T04:05:00.797+00:00"
}