CVE-2011-0491 Integer overflow in n/a
Remote attackers can crash the Tor daemon via unspecified vectors due to an integer underflow in memory allocation, causing 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-2011-0491?
CVE-2011-0491 is a medium-severity vulnerability in Tor Tor, published on 19 Jan 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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."
Weakness: CWE-20
Which versions are affected by CVE-2011-0491?
It affects 1 product.
Products include Tor Tor.
How do I fix CVE-2011-0491?
Upgrade to a fixed version.
Is CVE-2011-0491 being exploited?
There is no known exploitation of CVE-2011-0491 in the wild and no public exploit code.
Other vulnerabilities in Tor Tor
- CVE-2010-1676 Memory corruption in n/a
- CVE-2009-0939 Tor before 0.2.0.34 treats incomplete IPv4 addresses as valid, which has unknown impact and attack vectors related to "Spec conformance," as
- CVE-2009-0414 Memory corruption in n/a
- CVE-2008-5398 Information disclosure in n/a
- CVE-2011-2778 Memory corruption in n/a
Sources
Also known as DEBIAN-CVE-2011-0491, GHSA-gv9p-397w-xfq9.