CVE-2009-3727

Description

Asterisk Open Source 1.2.x before 1.2.35, 1.4.x before 1.4.26.3, 1.6.0.x before 1.6.0.17, and 1.6.1.x before 1.6.1.9; Business Edition A.x.x, B.x.x before B.2.5.12, C.2.x.x before C.2.4.5, and C.3.x.x before C.3.2.2; AsteriskNOW 1.5; and s800i 1.3.x before 1.3.0.5 generate different error messages depending on whether a SIP username is valid, which allows remote attackers to enumerate valid usernames via multiple crafted REGISTER messages with inconsistent usernames in the URI in the To header and the Digest in the Authorization header.

References

https://www.redhat.com/archives/fedora-package-announce/2009-November/msg00838.html

https://www.redhat.com/archives/fedora-package-announce/2009-November/msg00789.html

https://bugzilla.redhat.com/show_bug.cgi?id=533137

https://bugzilla.redhat.com/show_bug.cgi?id=523277

http://www.securitytracker.com/id?1023133

http://www.securityfocus.com/bid/36924

http://www.debian.org/security/2009/dsa-1952

http://secunia.com/advisories/37677

http://secunia.com/advisories/37479

http://secunia.com/advisories/37265

http://osvdb.org/59697

http://downloads.asterisk.org/pub/security/AST-2009-008.html

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3