CVE-2011-4597 | BDVDB-2026-48470 Detail
Description#
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.
Impact#
No impact statement in the source data.
Weaknesses#
No weakness recorded in the source data.
References#
- http://osvdb.org/77597
- http://downloads.asterisk.org/pub/security/AST-2011-013.html
- http://openwall.com/lists/oss-security/2011/12/09/4
- http://openwall.com/lists/oss-security/2011/12/09/3
- http://secunia.com/advisories/47273
- http://archives.neohapsis.com/archives/bugtraq/2011-12/0151.html
- http://www.debian.org/security/2011/dsa-2367
- http://lists.digium.com/pipermail/asterisk-dev/2011-November/052191.html
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.