CVE-2011-2536

EPSS 1.9%

chan_sip.c in the SIP channel driver in Asterisk Open Source 1.4.x before 1.4.41.2, 1.6.2.x before 1.6.2.18.2, and 1.8.x before 1.8.4.4, and Asterisk Business Edition C.3.x before C.3.7.3, disregards the alwaysauthreject option and generates different responses for invalid SIP requests depending on whether the user account exists, which allows remote attackers to enumerate account names via a series of requests.

Produtos afetados

n/a · n/a

Quer saber se a sua infraestrutura está exposta a isto?

Falar com a TrueHacking →

Referências

http://downloads.asterisk.org/pub/security/AST-2011-011-1.8.diff http://downloads.asterisk.org/pub/security/AST-2011-011.html http://www.securitytracker.com/id?1025734