CVE-2011-4894

N/A

Published: December 23, 2011 at 02:00 AM UTC

Updated: June 16, 2026 at 11:35 PM UTC

1 product affected across 1 vendorTor

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Severity

N/A

Exploit prediction

EPSS 2%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Tor · Tor

95%

v ≤ 0.2.2.330.0.2 0.0.3 0.0.4 0.0.5 0.0.6 0.0.6.1 0.0.6.2 0.0.7 0.0.7.1 0.0.7.2 0.0.7.3 0.0.8 0.0.8.1 0.0.9 0.0.9.1 0.0.9.10 0.0.9.2 0.0.9.3 0.0.9.4 0.0.9.5 0.0.9.6 0.0.9.7 0.0.9.8 0.0.9.9 0.1.0.1 0.1.0.10 0.1.0.11 0.1.0.12 0.1.0.13 0.1.0.14 0.1.0.15 0.1.0.16 0.1.0.17 0.1.0.18 0.1.0.19 0.1.0.2 0.1.0.3 0.1.0.4 0.1.0.5 0.1.0.6 0.1.0.7 0.1.0.8 0.1.0.9 0.1.1 0.1.1.10.1.1.1 alpha0.1.1.100.1.1.10 alpha0.1.1.11 0.1.1.12 0.1.1.13 0.1.1.14 0.1.1.15 0.1.1.16 0.1.1.17 0.1.1.18 0.1.1.19 0.1.1.20.1.1.2 alpha0.1.1.20 0.1.1.21 0.1.1.22 0.1.1.23 0.1.1.25 0.1.1.26 0.1.1.30.1.1.3 alpha0.1.1.40.1.1.4 alpha0.1.1.50.1.1.5 alpha0.1.1.60.1.1.6 alpha0.1.1.70.1.1.7 alpha0.1.1.80.1.1.8 alpha0.1.1.90.1.1.9 alpha0.1.2.1 alpha0.1.2.1 alpha-cvs0.1.2.10 0.1.2.11 0.1.2.12 0.1.2.13 0.1.2.14 0.1.2.15 0.1.2.16 0.1.2.17 0.1.2.18 0.1.2.19 0.1.2.2 0.1.2.3 alpha 0.1.2.30 0.1.2.31 0.1.2.4 0.1.2.5 0.1.2.5 alpha 0.1.2.6 alpha 0.1.2.7 alpha 0.1.2.8 beta 0.1.2.9 0.2.0.1 alpha 0.2.0.10 alpha 0.2.0.11 alpha 0.2.0.12 alpha 0.2.0.13 alpha 0.2.0.14 alpha 0.2.0.15 alpha 0.2.0.16 alpha 0.2.0.17 alpha 0.2.0.18 alpha 0.2.0.19 alpha 0.2.0.2 alpha 0.2.0.20 alpha 0.2.0.21 alpha 0.2.0.22 alpha 0.2.0.23 alpha 0.2.0.24 alpha 0.2.0.25 alpha 0.2.0.26 alpha 0.2.0.27 alpha 0.2.0.28 alpha 0.2.0.29 0.2.0.29 alpha 0.2.0.3 alpha 0.2.0.30 0.2.0.30 alpha 0.2.0.31 0.2.0.31 alpha 0.2.0.32 alpha 0.2.0.33 0.2.0.34 alpha 0.2.0.35 0.2.0.4 alpha 0.2.0.5 alpha 0.2.0.6 alpha 0.2.0.7 alpha 0.2.0.8 alpha 0.2.0.9 alpha 0.2.1.1 alpha 0.2.1.1.1 alpha 0.2.1.1.10 alpha 0.2.1.1.11 alpha 0.2.1.1.12 0.2.1.1.12 alpha 0.2.1.1.13 0.2.1.1.14 0.2.1.1.15 0.2.1.1.16 0.2.1.1.17 0.2.1.1.18 0.2.1.1.19 0.2.1.1.2 alpha 0.2.1.1.20 0.2.1.1.21 0.2.1.1.22 0.2.1.1.23 0.2.1.1.24 0.2.1.1.25 0.2.1.1.26 0.2.1.1.27 0.2.1.1.28 0.2.1.1.3 alpha 0.2.1.1.4 alpha 0.2.1.1.5 alpha 0.2.1.1.6 alpha 0.2.1.1.7 alpha 0.2.1.1.8 alpha 0.2.1.1.9 alpha 0.2.1.10 alpha 0.2.1.11 alpha 0.2.1.12 0.2.1.12 alpha 0.2.1.13 0.2.1.14 0.2.1.15 0.2.1.16 0.2.1.17 0.2.1.18 0.2.1.19 0.2.1.2 alpha 0.2.1.20 0.2.1.21 0.2.1.22 0.2.1.23 0.2.1.24 0.2.1.25 0.2.1.26 0.2.1.27 0.2.1.28 0.2.1.29 0.2.1.3 alpha 0.2.1.4 alpha 0.2.1.5 alpha 0.2.1.6 alpha 0.2.1.7 alpha 0.2.1.8 alpha 0.2.1.9 alpha 0.2.2.1 0.2.2.1 alpha 0.2.2.10 alpha 0.2.2.11 alpha 0.2.2.12 alpha 0.2.2.13 alpha 0.2.2.14 alpha 0.2.2.15 alpha 0.2.2.16 alpha 0.2.2.17 alpha 0.2.2.18 alpha 0.2.2.19 alpha 0.2.2.2 0.2.2.2 alpha 0.2.2.20 alpha 0.2.2.29 0.2.2.29 beta 0.2.2.3 0.2.2.3 alpha 0.2.2.32 0.2.2.4 0.2.2.4 alpha 0.2.2.5 0.2.2.5 alpha 0.2.2.6 0.2.2.6 alpha 0.2.2.7 alpha 0.2.2.8 alpha 0.2.2.9 alpha

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://blog.torproject.org/blog/tor-02234-released-security-patches

References (1)

x_refsource_CONFIRMPatchVendor Advisory

Source: [email protected]

https://blog.torproject.org/blog/tor-02234-released-security-patches

CVSS

4.3MEDIUM[email protected]

Confidentiality: PARTIAL
Integrity: NONE
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-200

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