CVE-2011-0491
EPSS 2.5%
Description
The tor_realloc function in Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha does not validate a certain size value during memory allocation, which might allow remote attackers to cause a denial of service (daemon crash) via unspecified vectors, related to "underflow errors."
How to fix CVE-2011-0491
To remediate CVE-2011-0491, upgrade the affected package to a fixed version below.
- Debian/tor—upgrade to 0.2.1.29-1 or later
Is CVE-2011-0491 being exploited?
Low — EPSS is 2.5%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 0.2.1.29-1