Out-of-bounds read in Asterisk Open Source and Certified Asterisk - #VU6620
Published: May 23, 2017 / Updated: May 25, 2017
Vulnerability identifier: #VU6620
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists due to improper memory read. A remote attacker can send a specially crafted packet containing a long CSeq header value along with a Via header with no branch parameter, trigger an out-of-bounds memory read and cause the affected system to crash.
Successful exploitation of the vulnerability results in denial of service.
The weakness exists due to improper memory read. A remote attacker can send a specially crafted packet containing a long CSeq header value along with a Via header with no branch parameter, trigger an out-of-bounds memory read and cause the affected system to crash.
Successful exploitation of the vulnerability results in denial of service.
Affected software
Asterisk Open Source
Certified Asterisk
Certified Asterisk
Remediation
Update Asterisk to version 13.15.1 and 14.4.1.
Update Certified Asterisk to version 13.13-cert.
Update Certified Asterisk to version 13.13-cert.