CVE-2011-4894

UnknownEPSS 1.62%

Last modified

CVE-2011-4894 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.62% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
1.62%

72.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
TorTor<= 0.2.2.33
TorTor0.0.2
TorTor0.0.3
TorTor0.0.4
TorTor0.0.5
TorTor0.0.6
TorTor0.0.6.1
TorTor0.0.6.2
TorTor0.0.7
TorTor0.0.7.1
TorTor0.0.7.2
TorTor0.0.7.3
TorTor0.0.8
TorTor0.0.8.1
TorTor0.0.9
TorTor0.0.9.1
TorTor0.0.9.2
TorTor0.0.9.3
TorTor0.0.9.4
TorTor0.0.9.5
TorTor0.0.9.6
TorTor0.0.9.7
TorTor0.0.9.8
TorTor0.0.9.9
TorTor0.0.9.10
TorTor0.1.0.1
TorTor0.1.0.2
TorTor0.1.0.3
TorTor0.1.0.4
TorTor0.1.0.5
TorTor0.1.0.6
TorTor0.1.0.7
TorTor0.1.0.8
TorTor0.1.0.9
TorTor0.1.0.10
TorTor0.1.0.11
TorTor0.1.0.12
TorTor0.1.0.13
TorTor0.1.0.14
TorTor0.1.0.15
TorTor0.1.0.16
TorTor0.1.0.17
TorTor0.1.0.18
TorTor0.1.0.19
TorTor0.1.1
TorTor0.1.1.1
TorTor0.1.1.2
TorTor0.1.1.3
TorTor0.1.1.4
TorTor0.1.1.5

Showing 50 of 205 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2011-4894?
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.
How severe is CVE-2011-4894?
Severity scoring for CVE-2011-4894 is pending analysis. The EPSS model estimates a 1.62% probability of exploitation in the next 30 days.
How do I fix CVE-2011-4894?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2011-4894?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST