CVE-2011-4597

Summary

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 Software

Weaknesses

• n/a

ADP Enrichment

CVE Program Container

Additional 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

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

• ←Previous
• Next→