CVE-2011-4894
Tor before 0.2.2.34, when configured as a bridge, uses direct DirPort access instead of a Tor TLS...
CVE-2011-4894 is a medium vulnerability (CVSS 4.3) in Tor, published December 23, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.53%, the 74th percentile. Fixed in tor 0.2.2.34-1.
Tor before 0.2.2.34, when configured as a bridge, uses direct DirPort access instead of a Tor TLS connection for a directory fetch, which makes it easier for remote attackers to enumerate bridges by observing DirPort connections.
Exploit likelihood
What each source reports
NVD Score used
4.3
Tor before 0.2.2.34, when configured as a bridge, uses direct DirPort access instead of a Tor TLS connection for a directory fetch, which makes it easier for remote attackers to enumerate bridges by observing DirPort connections.
- Record
CVE-2011-4894- CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:P/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
CVE List No score
Tor before 0.2.2.34, when configured as a bridge, uses direct DirPort access instead of a Tor TLS connection for a directory fetch, which makes it easier for remote attackers to enumerate bridges by observing DirPort connections.
- Record
CVE-2011-4894- Updated
- 2026-11-02
EUVDEUVD-2011-4811 No score
Tor before 0.2.2.34, when configured as a bridge, uses direct DirPort access instead of a Tor TLS connection for a directory fetch, which makes it easier for remote attackers to enumerate bridges by observing DirPort connections.
- Record
EUVD-2011-4811- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-j87m-97hh-864x No score
Tor before 0.2.2.34, when configured as a bridge, uses direct DirPort access instead of a Tor TLS...
Tor before 0.2.2.34, when configured as a bridge, uses direct DirPort access instead of a Tor TLS connection for a directory fetch, which makes it easier for remote attackers to enumerate bridges by observing DirPort connections.
- Record
GHSA-j87m-97hh-864x- Weakness
- CWE-200
- Updated
- 2026-11-02
OSV No score
Tor before 0.2.2.34, when configured as a bridge, uses direct DirPort access instead of a Tor TLS connection for a directory fetch, which makes it easier for remote attackers to enumerate bridges by observing DirPort connections.
- Record
CVE-2011-4894- Updated
- 2026-11-02
OSVDEBIAN-CVE-2011-4894 No score
Tor before 0.2.2.34, when configured as a bridge, uses direct DirPort access instead of a Tor TLS connection for a directory fetch, which makes it easier for remote attackers to enumerate bridges by observing DirPort connections.
- Record
DEBIAN-CVE-2011-4894- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:10423-1 No score
tor-0.2.8.11-1.1 on GA media
These are all security issues fixed in the tor-0.2.8.11-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10423-1- Updated
- 2026-11-02
Affected products
Affected packages
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD, OSV |
References
blog.torproject.org/blog/tor-02234-released-security-patches
nvd.nist.gov/vuln/detail/CVE-2011-4894
github.com/advisories/GHSA-j87m-97hh-864x
security-tracker.debian.org/tracker/CVE-2011-4894
suse.com/security/cve/CVE-2011-0427
suse.com/security/cve/CVE-2011-2768
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