Buffer overflow in Kamailio - CVE-2018-16657
Published: September 17, 2018
Vulnerability identifier: #VU14789
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-16657
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input when processing SIP messages with an invalid "Via" header within the crcitt_string_array() and check_via_address() functions. A remote attacker can send a specially crafted SIP message, trigger memory corruption and crash the service or execute arbitrary code.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
Affected software
Kamailio
Debian Linux
Ubuntu
kamailio (Ubuntu package)
Debian Linux
Ubuntu
kamailio (Ubuntu package)
How to mitigate CVE-2018-16657
Install updates from vendor's website.
Kamailio - addressed in versions 5.0.7, 5.1.4
kamailio (Ubuntu package) - update to Ubuntu Pro
kamailio (Ubuntu package) - update to Ubuntu Pro