CVE-2011-0492 Denial of service in n/a
Remote attackers can cause a denial of service in Tor by sending specific data blobs that trigger an assertion failure and daemon exit.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2011-0492?
CVE-2011-0492 is a medium-severity denial of service 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
Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha allows remote attackers to cause a denial of service (assertion failure and daemon exit) via blobs that trigger a certain file size, as demonstrated by the cached-descriptors.new file.
Weakness: CWE-399
Which versions are affected by CVE-2011-0492?
It affects 1 product.
Products include Tor Tor.
How do I fix CVE-2011-0492?
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-2011-0492 being exploited?
There is no known exploitation of CVE-2011-0492 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-2011-0492, GHSA-qr77-cqc5-fjjj.