CVEvulnerability

CVE-2009-3727

5.0 MEDIUM Published 2009-11-10 Modified 2026-06-16 Official page ↗
Status
Modified
Published
2009-11-10
Last modified
2026-06-16
Assigner
[email protected]
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:P/I:N/A:N
Weaknesses
CWE-200

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.

Affected configurations

• digium asterisk 1.2.0 • digium asterisk 1.2.1 • digium asterisk 1.2.2 • digium asterisk 1.2.3 • digium asterisk 1.2.10 • digium asterisk 1.2.11 • digium asterisk 1.2.12 • digium asterisk 1.2.12.1 • digium asterisk 1.2.13 • digium asterisk 1.2.14 • digium asterisk 1.2.15 • digium asterisk 1.2.16 • digium asterisk 1.2.17 • digium asterisk 1.2.18 • digium asterisk 1.2.19 • digium asterisk 1.2.20 • digium asterisk 1.2.21 • digium asterisk 1.2.21.1 • digium asterisk 1.2.22 • digium asterisk 1.2.23 • digium asterisk 1.2.24 • digium asterisk 1.2.25 • digium asterisk 1.2.26 • digium asterisk 1.2.26.1 • digium asterisk 1.2.26.2 • digium asterisk 1.2.27 • digium asterisk 1.2.28 • digium asterisk 1.2.28.1 • digium asterisk 1.2.29 • digium asterisk 1.2.30 • digium asterisk 1.2.30.1 • digium asterisk 1.2.30.2 • digium asterisk 1.2.30.3 • digium asterisk 1.2.30.4 • digium asterisk 1.2.31 • digium asterisk 1.2.31.1 • digium asterisk 1.2.32 • digium asterisk 1.2.33 • digium asterisk 1.2.34 • digium asterisk 1.4.0 • digium asterisk 1.4.1 • digium asterisk 1.4.2 • digium asterisk 1.4.3 • digium asterisk 1.4.4 • digium asterisk 1.4.5 • digium asterisk 1.4.6 • digium asterisk 1.4.7 • digium asterisk 1.4.7.1 • digium asterisk 1.4.8 • digium asterisk 1.4.9 • digium asterisk 1.4.10 • digium asterisk 1.4.10.1 • digium asterisk 1.4.11 • digium asterisk 1.4.12 • digium asterisk 1.4.12.1 • digium asterisk 1.4.13 • digium asterisk 1.4.14 • digium asterisk 1.4.15 • digium asterisk 1.4.16 • digium asterisk 1.4.16.1 … and 73 more

Related

Weakness · CWE (1)

  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor weakness

References