NULL pointer dereference - CVE-2019-15297
Published: September 9, 2019 / Updated: August 4, 2020
Vulnerability identifier: #VU33397
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-15297
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote authenticated user to perform a denial of service (DoS) attack.
res_pjsip_t38 in Sangoma Asterisk 13.21-cert4, 15.7.3, and 16.5.0 allows an attacker to trigger a crash by sending a declined stream in a response to a T.38 re-invite initiated by Asterisk.
Affected software
asterisk (Alpine package)
How to mitigate CVE-2019-15297
Install update from vendor's website.
asterisk (Alpine package) - update to 15.6.2-r0