CVE-2011-2536

EPSS 0.19%
Published: 7/6/2011Modified: 4/28/2026
Also known as:DEBIAN-CVE-2011-2536

Description

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.

Affected packages (1)

References (1)