Out-of-bounds read in Suricata and Debian Linux - CVE-2018-10242
Published: April 4, 2019 / Updated: August 8, 2020
Vulnerability identifier: #VU36029
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2018-10242
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Open Information Security Foundation
Debian
Debian
Affected software:
Suricata
Debian Linux
Suricata
Debian Linux
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
Suricata version 4.0.4 incorrectly handles the parsing of the SSH banner. A malformed SSH banner can cause the parsing code to read beyond the allocated data because SSHParseBanner in app-layer-ssh.c lacks a length check.
How to mitigate CVE-2018-10242
Install update from vendor's website.