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.2.5.12, 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…
Does this matter?
Lower severity and a low EPSS score (4.20%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 2.0
- 5.0 MEDIUMAV:N/AC:L/Au:N/C:P/I:N/A:N
- EPSS
- 4.20% probability · 90th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-200
- Affected
- digium/asterisk · digium/asterisknow · digium/s800i
- Source
- secalert@redhat.com
References
- http://downloads.asterisk.org/pub/security/AST-2009-008.htmlVendor Advisory
- http://osvdb.org/59697
- http://secunia.com/advisories/37265Vendor Advisory
- http://secunia.com/advisories/37479
- http://secunia.com/advisories/37677
- http://www.debian.org/security/2009/dsa-1952
- http://www.securityfocus.com/bid/36924Patch
- http://www.securitytracker.com/id?1023133
- https://bugzilla.redhat.com/show_bug.cgi?id=523277
- https://bugzilla.redhat.com/show_bug.cgi?id=533137
- https://www.redhat.com/archives/fedora-package-announce/2009-November/msg00789.html
- https://www.redhat.com/archives/fedora-package-announce/2009-November/msg00838.html
- http://downloads.asterisk.org/pub/security/AST-2009-008.htmlVendor Advisory
- http://osvdb.org/59697
- http://secunia.com/advisories/37265Vendor Advisory
- http://secunia.com/advisories/37479
- http://secunia.com/advisories/37677
- http://www.debian.org/security/2009/dsa-1952
- http://www.securityfocus.com/bid/36924Patch
- http://www.securitytracker.com/id?1023133
- https://bugzilla.redhat.com/show_bug.cgi?id=523277
- https://bugzilla.redhat.com/show_bug.cgi?id=533137
- https://www.redhat.com/archives/fedora-package-announce/2009-November/msg00789.html
- https://www.redhat.com/archives/fedora-package-announce/2009-November/msg00838.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.