#VU11858 NULL pointer dereference in nghttp2 - CVE-2018-1000168
Published: April 17, 2018
Vulnerability identifier: #VU11858
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2018-1000168
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
nghttp2
nghttp2
Software vendor:
nghttp2
nghttp2
Description
The vulnerability allows a remote unauthenticated attacker to cause DoS condition on the target system.
The weakness exists due to improper bounds checking. If an alternative services (ALTSVC) frame is too large, the pointer field that points to the ALTSVC frame payload is left NULL. A remote attacker can submit a large ALTSVC frame, trigger a NULL pointer dereference and cause the service to crash.
Remediation
Update to version 1.31.1.