CVE-2008-3903
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.
Key facts
- CVSS score
- 3.5 (v2.0)
- Severity
- LOW
- CVSS vector
AV:N/AC:M/Au:S/C:P/I:N/A:N- Weakness (CWE)
- CWE-200
- EPSS score
- 1.9% (79th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2008-3889)
- Published
- September 4, 2008
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2008-3889 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- asterisk / p b x
- asterisk / p b x
- asterisk / p b x
- asterisk / p b x
- trixbox / pbx
References
- http://downloads.asterisk.org/pub/security/AST-2009-003.html
- http://misel.com/?p=52
- http://secunia.com/advisories/34982
- http://secunia.com/advisories/37677
- http://security.gentoo.org/glsa/glsa-200905-01.xml
- http://www.debian.org/security/2009/dsa-1952
- http://www.securityfocus.com/bid/34353
- http://www.vupen.com/english/advisories/2009/0933
- https://exchange.xforce.ibmcloud.com/vulnerabilities/45059
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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