CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
EPSS
Percentile
86.1%
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.