CVE-2014-5117 Information disclosure in n/a

Medium 5.8 Published Updated

Remote attackers can identify hidden service names by analyzing RELAY cell patterns, compromising user anonymity in Tor networks.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2014-5117?

CVE-2014-5117 is a medium-severity vulnerability in n/a, published on 30 Jul 2014. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Tor before 0.2.4.23 and 0.2.5 before 0.2.5.6-alpha maintains a circuit after an inbound RELAY_EARLY cell is received by a client, which makes it easier for remote attackers to conduct traffic-confirmation attacks by using the pattern of RELAY and RELAY_EARLY cells as a means of communicating information about hidden service names.

Which versions are affected by CVE-2014-5117?

It affects 1 product.

Products include Torproject Tor.

How do I fix CVE-2014-5117?

Upgrade to a fixed version.

Is CVE-2014-5117 being exploited?

There is no known exploitation of CVE-2014-5117 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2014-5117, DSA-2993-1, GHSA-v73p-8445-35p5, MGASA-2014-0312, UBUNTU-CVE-2014-5117.

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