UnratedFix available
tor — security advisory
The networkstatus_parse_vote_from_string function in routerparse.c in Tor before 0.2.2.38 does not properly handle an invalid flavor name, which allows remote attackers to cause a denial of service (out-of-bounds read and daemon crash) via a crafted (1) vote document or (2) consensus document.
- Products
- tor
- Affected versions
- Not specified
- Fixed versions
- 0.2.3.20-rc-1
- CVEs
- CVE-2012-3518
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 22:56 UTC · Revision 1
Source evidence
The networkstatus_parse_vote_from_string function in routerparse.c in Tor before 0.2.2.38 does not properly handle an invalid flavor name, which allows remote attackers to cause a denial of service (out-of-bounds read and daemon crash) via a crafted (1) vote document or (2) consensus document.
osv:DEBIAN-CVE-2012-3518
tor
Fixed versions: 0.2.3.20-rc-1
tor
Fixed versions: 0.2.3.20-rc-1
tor
Fixed versions: 0.2.3.20-rc-1
Complete source record
{
"id": "efec53ec3b27038d2cd8a96a6242e47caceeeab30ad82f78f9b2c401bb1075ec",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2012-3518",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2012-3518",
"summary": "The networkstatus_parse_vote_from_string function in routerparse.c in Tor before 0.2.2.38 does not properly handle an invalid flavor name, which allows remote attackers to cause a denial of service (out-of-bounds read and daemon crash) via a crafted (1) vote document or (2) consensus document.",
"evidence": "osv:DEBIAN-CVE-2012-3518",
"products": [
{
"name": {
"value": "tor",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0.2.3.20-rc-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "tor",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0.2.3.20-rc-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "tor",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0.2.3.20-rc-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "DEBIAN-CVE-2012-3518",
"aliases": [
"DEBIAN-CVE-2012-3518"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.2.3.20-rc-1"
}
]
}
],
"package": {
"name": "tor",
"purl": "pkg:deb/debian/tor?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2012-3518.json"
},
"ecosystem_specific": {
"urgency": "low"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.2.3.20-rc-1"
}
]
}
],
"package": {
"name": "tor",
"purl": "pkg:deb/debian/tor?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2012-3518.json"
},
"ecosystem_specific": {
"urgency": "low"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.2.3.20-rc-1"
}
]
}
],
"package": {
"name": "tor",
"purl": "pkg:deb/debian/tor?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2012-3518.json"
},
"ecosystem_specific": {
"urgency": "low"
}
}
],
"modified": "2026-10-23T17:47:30.133752333Z",
"provider": "osv",
"upstream": [
"CVE-2012-3518"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2012-3518"
]
},
"related_cves": [
{
"value": "CVE-2012-3518",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 417280,
"published_at": "2012-08-26T03:17:44.09+00:00"
}