CVE-2011-2768

UnknownEPSS 0.77%

Last modified

CVE-2011-2768 is a vulnerability of currently unknown severity. Tor before 0.2.2.34, when configured as a client or bridge, sends a TLS certificate chain as part of an outgoing OR connection, which allows remote relays to bypass intended anonymity properties by reading this chain and then determining the set of entry guards that the client or bridge had selected.. EPSS estimates a 0.77% chance of exploitation in the next 30 days.

Description

Tor before 0.2.2.34, when configured as a client or bridge, sends a TLS certificate chain as part of an outgoing OR connection, which allows remote relays to bypass intended anonymity properties by reading this chain and then determining the set of entry guards that the client or bridge had selected.

Metrics

EPSS Probability
0.77%

50.7th 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-2011-2768?
Tor before 0.2.2.34, when configured as a client or bridge, sends a TLS certificate chain as part of an outgoing OR connection, which allows remote relays to bypass intended anonymity properties by reading this chain and then determining the set of entry guards that the client or bridge had selected.
How severe is CVE-2011-2768?
Severity scoring for CVE-2011-2768 is pending analysis. The EPSS model estimates a 0.77% probability of exploitation in the next 30 days.
How do I fix CVE-2011-2768?
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-2011-2768?

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

Scan your code now

Source: NVD / NIST