NULL pointer dereference in nghttp2 - CVE-2018-1000168
Published: April 17, 2018
Vulnerability identifier: #VU11858
CSH Severity: Low
CVSS v4.0: 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
Vendor: nghttp2
Affected software:
nghttp2
nghttp2
Detailed vulnerability 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.
How to mitigate CVE-2018-1000168
Update to version 1.31.1.