Security Advisory

CVE-2011-2536

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2011-07-06 19:00:00

Last updated 2024-08-06 23:08:22

Assigner mitre

CVSS score not scored

State PUBLISHED

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.

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