CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
AI Score
Confidence
Low
EPSS
Percentile
85.9%
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.
Vendor | Product | Version | CPE |
---|---|---|---|
digium | asterisk | 1.2.0 | cpe:2.3:a:digium:asterisk:1.2.0:*:*:*:*:*:*:* |
digium | asterisk | 1.2.0 | cpe:2.3:a:digium:asterisk:1.2.0:beta1:*:*:*:*:*:* |
digium | asterisk | 1.2.0 | cpe:2.3:a:digium:asterisk:1.2.0:beta2:*:*:*:*:*:* |
digium | asterisk | 1.2.0 | cpe:2.3:a:digium:asterisk:1.2.0:rc1:*:*:*:*:*:* |
digium | asterisk | 1.2.0 | cpe:2.3:a:digium:asterisk:1.2.0:rc2:*:*:*:*:*:* |
digium | asterisk | 1.2.1 | cpe:2.3:a:digium:asterisk:1.2.1:*:*:*:*:*:*:* |
digium | asterisk | 1.2.2 | cpe:2.3:a:digium:asterisk:1.2.2:*:*:*:*:*:*:* |
digium | asterisk | 1.2.2 | cpe:2.3:a:digium:asterisk:1.2.2:netsec:*:*:*:*:*:* |
digium | asterisk | 1.2.3 | cpe:2.3:a:digium:asterisk:1.2.3:*:*:*:*:*:*:* |
digium | asterisk | 1.2.3 | cpe:2.3:a:digium:asterisk:1.2.3:netsec:*:*:*:*:*:* |
downloads.asterisk.org/pub/security/AST-2009-008.html
osvdb.org/59697
secunia.com/advisories/37265
secunia.com/advisories/37479
secunia.com/advisories/37677
www.debian.org/security/2009/dsa-1952
www.securityfocus.com/bid/36924
www.securitytracker.com/id?1023133
bugzilla.redhat.com/show_bug.cgi?id=523277
bugzilla.redhat.com/show_bug.cgi?id=533137
www.redhat.com/archives/fedora-package-announce/2009-November/msg00789.html
www.redhat.com/archives/fedora-package-announce/2009-November/msg00838.html