CVE-2012-2249 Denial of service in n/a
Remote attackers can cause a denial of service in Tor by triggering an assertion failure during V3 link protocol renegotiation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2012-2249?
CVE-2012-2249 is a medium-severity denial of service vulnerability in n/a, published on 3 Feb 2014. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Tor before 0.2.3.23-rc allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a renegotiation attempt that occurs after the initiation of the V3 link protocol.
Which versions are affected by CVE-2012-2249?
It affects 1 product.
Products include Torproject Tor.
How do I fix CVE-2012-2249?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2012-2249 being exploited?
There is no known exploitation of CVE-2012-2249 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2012-2249, GHSA-h977-vhf7-vm3w.