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CVE-2014-4048

Status Candidate

Overview

The PJSIP Channel Driver in Asterisk Open Source before 12.3.1 allows remote attackers to cause a denial of service (deadlock) by terminating a subscription request before it is complete, which triggers a SIP transaction timeout.

Related Files

Asterisk Project Security Advisory - AST-2014-008
Posted Jun 13, 2014
Authored by Mark Michelson | Site asterisk.org

Asterisk Project Security Advisory - When a SIP transaction timeout caused a subscription to be terminated, the action taken by Asterisk was guaranteed to deadlock the thread on which SIP requests are serviced. Note that this behavior could only happen on established subscriptions, meaning that this could only be exploited if an attacker bypassed authentication and successfully subscribed to a real resource on the Asterisk server.

tags | advisory
advisories | CVE-2014-4048
MD5 | e7f4e447ff2973429204f7f14511596c
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