Input validation error in libhtp - CVE-2019-17420
Published: October 10, 2019 / Updated: July 17, 2020
Vulnerability identifier: #VU30728
CSH Severity: Medium
CVSS v4.0: 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/E:U/U:Green
CVE-ID: CVE-2019-17420
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Open Information Security Foundation
Affected software:
libhtp
libhtp
Detailed vulnerability description
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.
How to mitigate CVE-2019-17420
Install update from vendor's website.