Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2008-3903

Severity CVSS v4.0:
Pending analysis
Type:
CWE-200 Information Leak / Disclosure
Publication date:
04/09/2008
Last modified:
09/04/2025

Description

Asterisk Open Source 1.2.x before 1.2.32, 1.4.x before 1.4.24.1, and 1.6.0.x before 1.6.0.8; Asterisk Business Edition A.x.x, B.x.x before B.2.5.8, C.1.x.x before C.1.10.5, and C.2.x.x before C.2.3.3; s800i 1.3.x before 1.3.0.2; and Trixbox PBX 2.6.1, when Digest authentication and authalwaysreject are enabled, generates different responses depending on whether a SIP username is valid, which allows remote attackers to enumerate valid usernames.

Impact

Vector 2.0
AV:N/AC:M/Au:S/C:P/I:N/A:N CVSS v2.0 Severity and Metrics:

Base Score: 3.50 LOW
Vector: AV:N/AC:M/Au:S/C:P/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): Single
Confidentiality (C): Physical
Integrity (I): None
Availability (A): None

Base Score 2.0
3.50
Severity 2.0
LOW

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:asterisk:p_b_x:1.2:*:*:*:*:*:*:*
cpe:2.3:a:asterisk:p_b_x:1.2.22:*:*:*:*:*:*:*
cpe:2.3:a:asterisk:p_b_x:1.4.21.1:*:*:*:*:*:*:*
cpe:2.3:a:asterisk:p_b_x:1.6:*:*:*:*:*:*:*
cpe:2.3:a:trixbox:pbx:2.6.1:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools