CVE-2012-4419 Denial of service in n/a
Remote attackers can crash the Tor daemon by sending a zero-valued port field, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2012-4419?
CVE-2012-4419 is a medium-severity denial of service vulnerability in n/a, published on 14 Sep 2012. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The compare_tor_addr_to_addr_policy function in or/policies.c in Tor before 0.2.2.39, and 0.2.3.x before 0.2.3.21-rc, allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a zero-valued port field that is not properly handled during policy comparison.
Which versions are affected by CVE-2012-4419?
It affects 1 product.
Products include Torproject Tor.
How do I fix CVE-2012-4419?
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-2012-4419 being exploited?
There is no known exploitation of CVE-2012-4419 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2012-4419, GHSA-jghf-vwc6-g7gh.