Input validation error in libhtp - CVE-2019-17420
Published: October 10, 2019 / Updated: July 17, 2020
Vulnerability identifier: #VU30728
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-17420
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to manipulate data.
In OISF LibHTP before 0.5.31, as used in Suricata 4.1.4 and other products, an HTTP protocol parsing error causes the http_header signature to not alert on a response with a single ending.
Affected software
libhtp
How to mitigate CVE-2019-17420
Install update from vendor's website.
libhtp - update to 0.5.31