CVE catalog

CVE-2017-0377

tor: CVE-2017-0377

Severity: Low · CVSS 3.7CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Published: Jun 15, 2024, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 2.45% · Oct 25, 2026

Tor 0.3.x before 0.3.0.9 has a guard-selection algorithm that only considers the exit relay (not the exit relay's family), which might allow remote attackers to defeat intended anonymity properties by leveraging the existence of large families.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	tor	sid	`0.4.9.14-1`	not affected
Debian	tor	forky	`0.4.9.14-1`	not affected
Debian	tor	trixie	`0.4.9.11-0+deb13u1`	not affected
Debian	tor	trixie-security	`0.4.9.14-0+deb13u1`	not affected
Debian	tor	bookworm	`0.4.9.11-0+deb12u1`	not affected
Debian	tor	bookworm-security	`0.4.9.11-0+deb12u1`	not affected

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	tor	source	sid	`Not affected`	unimportant	Not reported	Not reported
Debian	tor	source	forky	`Not affected`	unimportant	Not reported	Not reported
Debian	tor	source	trixie	`Not affected`	unimportant	Not reported	Not reported
Debian	tor	source	bookworm	`Not affected`	unimportant	Not reported	Not reported

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[tor]Unknown
Details (6)
- 0.4.9.11-0+deb12u1 · amd64 · bookworm
  Not affected
  dsa · tor · debian · bookworm
- 0.4.9.11-0+deb12u1 · arm64 · bookworm
  Not affected
  dsa · tor · debian · bookworm
- 0.4.8.14-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  dsa · tor · debian · bookworm
- 0.4.8.14-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  dsa · tor · debian · bookworm
- 0.4.9.11-0+deb12u1 · amd64 · bookworm-security
  Not affected
  dsa · tor · debian · bookworm
- 0.4.9.11-0+deb12u1 · arm64 · bookworm-security
  Not affected
  dsa · tor · debian · bookworm
[tor-geoipdb]Unknown
Source package: [tor]
Details (6)
- 0.4.9.11-0+deb12u1 · all · bookworm
  Not affected
  dsa · tor · debian · bookworm
- 0.4.9.11-0+deb12u1 · all · bookworm
  Not affected
  dsa · tor · debian · bookworm
- 0.4.8.14-1~bpo12+1 · all · bookworm-backports
  Not affected
  dsa · tor · debian · bookworm
- 0.4.8.14-1~bpo12+1 · all · bookworm-backports
  Not affected
  dsa · tor · debian · bookworm
- 0.4.9.11-0+deb12u1 · all · bookworm-security
  Not affected
  dsa · tor · debian · bookworm
- 0.4.9.11-0+deb12u1 · all · bookworm-security
  Not affected
  dsa · tor · debian · bookworm

Observed: Oct 27, 2026, 3:32:01 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [SUSE security advisories and VEX]