memcached — security advisory
The process_stat function in (1) Memcached before 1.2.8 and (2) MemcacheDB 1.2.0 discloses (a) the contents of /proc/self/maps in response to a stats maps command and (b) memory-allocation statistics in response to a stats malloc command, which allows remote attackers to obtain sensitive information such as the locations of memory regions, and defeat ASLR protection, by sending a command to the daemon's TCP port.
- Products
- memcached
- Affected versions
- Not specified
- Fixed versions
- 1.2.8-1
- CVEs
- CVE-2009-1255
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 22:34 UTC · Revision 1
Source evidence
The process_stat function in (1) Memcached before 1.2.8 and (2) MemcacheDB 1.2.0 discloses (a) the contents of /proc/self/maps in response to a stats maps command and (b) memory-allocation statistics in response to a stats malloc command, which allows remote attackers to obtain sensitive information such as the locations of memory regions, and defeat ASLR protection, by sending a command to the daemon's TCP port.
osv:DEBIAN-CVE-2009-1255
memcached
Fixed versions: 1.2.8-1
memcached
Fixed versions: 1.2.8-1
memcached
Fixed versions: 1.2.8-1
Complete source record
{
"id": "422900740b3aa407fc8de51b379420901b74d25720dd64f4c6589f2cd9d1166d",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2009-1255",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2009-1255",
"summary": "The process_stat function in (1) Memcached before 1.2.8 and (2) MemcacheDB 1.2.0 discloses (a) the contents of /proc/self/maps in response to a stats maps command and (b) memory-allocation statistics in response to a stats malloc command, which allows remote attackers to obtain sensitive information such as the locations of memory regions, and defeat ASLR protection, by sending a command to the daemon's TCP port.",
"evidence": "osv:DEBIAN-CVE-2009-1255",
"products": [
{
"name": {
"value": "memcached",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.2.8-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "memcached",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.2.8-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "memcached",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.2.8-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "DEBIAN-CVE-2009-1255",
"aliases": [
"DEBIAN-CVE-2009-1255"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.2.8-1"
}
]
}
],
"package": {
"name": "memcached",
"purl": "pkg:deb/debian/memcached?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2009-1255.json"
},
"ecosystem_specific": {
"urgency": "low"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.2.8-1"
}
]
}
],
"package": {
"name": "memcached",
"purl": "pkg:deb/debian/memcached?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2009-1255.json"
},
"ecosystem_specific": {
"urgency": "low"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.2.8-1"
}
]
}
],
"package": {
"name": "memcached",
"purl": "pkg:deb/debian/memcached?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2009-1255.json"
},
"ecosystem_specific": {
"urgency": "low"
}
}
],
"modified": "2026-10-23T17:47:24.882785673Z",
"provider": "osv",
"upstream": [
"CVE-2009-1255"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2009-1255"
]
},
"related_cves": [
{
"value": "CVE-2009-1255",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 416800,
"published_at": "2009-04-30T20:30:00.343+00:00"
}