CVE-2005-2643 Weak cryptography in n/a
Malicious Tor servers can exploit weak Diffie-Hellman keys to compromise client anonymity and access keys used for other systems in the circuit.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2005-2643?
CVE-2005-2643 is a medium-severity vulnerability in Tor Tor, published on 21 Aug 2005. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Tor 0.1.0.13 and earlier, and experimental versions 0.1.1.4-alpha and earlier, does not reject certain weak keys when using ephemeral Diffie-Hellman (DH) handshakes, which allows malicious Tor servers to obtain the keys that a client uses for other systems in the circuit.
Which versions are affected by CVE-2005-2643?
It affects 1 product.
Products include Tor Tor.
How do I fix CVE-2005-2643?
Upgrade to a fixed version.
Is CVE-2005-2643 being exploited?
There is no known exploitation of CVE-2005-2643 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-2005-2643, GHSA-jxhg-8chc-rj8x.