CVE-2011-4597
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 3.2%
The SIP over UDP implementation in Asterisk Open Source 1.4.x before 1.4.43, 1.6.x before 1.6.2.21, and 1.8.x before 1.8.7.2 uses different port numbers for responses to invalid requests depending on whether a SIP username exists, which allows remote attackers to enumerate usernames via a series of requests.
Affected products
n/a · n/aReferences
http://archives.neohapsis.com/archives/bugtraq/2011-12/0151.htmlhttp://downloads.asterisk.org/pub/security/AST-2011-013.htmlhttp://lists.digium.com/pipermail/asterisk-dev/2011-November/052191.htmlhttp://openwall.com/lists/oss-security/2011/12/09/3http://openwall.com/lists/oss-security/2011/12/09/4http://osvdb.org/77597http://secunia.com/advisories/47273http://www.debian.org/security/2011/dsa-2367