CVE-2011-0490

CVE-2011-0490 describes a denial-of-service vulnerability affecting Tor versions before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha. This flaw allows remote attackers to crash the Tor daemon by triggering specific log messages that cause recursive calls to Libevent within its own log handlers. With a CVSS score of 5.0, this vulnerability is of medium severity, requiring no authentication and having low attack complexity, leading to a partial availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.