4.3CVSSMEDIUM
Description
Asterisk Open Source 1.0.x and 1.2.x before 1.2.29 and Business Edition A.x.x and B.x.x before B.2.5.3, when pedantic parsing (aka pedanticsipchecking) is enabled, allows remote attackers to cause a denial of service (daemon crash) via a SIP INVITE message that lacks a From header, related to invocations of the ast_uri_decode function, and improper handling of (1) an empty const string and (2) a NULL pointer.
CVSS Vector Breakdown
Exploitability
AV:NAccess VectorNetwork
AC:MAccess ComplexityMedium
Au:NAuthenticationNone
Impact
C:NConfidentialityNone
I:NIntegrityNone
A:PAvailabilityPartial
Weaknesses
Affected Products
Attack Graph
Products CVE Techniques Tactics
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Exploitability
1 exploit source identified
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View exploit detailsMITRE ATT&CK
1 technique Initial Access
References
http://security.gentoo.org/glsa/glsa-200905-01.xml
security.gentoo.org
http://secunia.com/advisories/30517
secunia.com
https://www.exploit-db.com/exploits/5749
exploit-db.com
and 8 more references View all →
Timeline
Published
Jun 4, 2008
Last Updated
Apr 23, 2026
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