NetSight
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medium5.0

CVE-2009-3727

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.…

Impact

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.

Affected products

VendorProductAffected versions
DigiumAsterisk
Versions 1.2.0, 1.2.1, 1.2.2, 1.2.3, 1.2.10, 1.2.11
DigiumAsterisknow
Version 1.5
DigiumS800i
Versions 1.3.0, 1.3.0.2, 1.3.0.3, 1.3.0.4

Weakness classification

CWE-200

References