Security restrictions bypass in Suricata - CVE-2018-6794

Vulnerability identifier: #VU11123

CSH Severity: Low

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2018-6794

CWE-ID: CWE-693

Exploitation vector: Remote access

Exploit availability: Public exploit is available

The vulnerability allows a remote unauthenticated attacker to bypass security restrictions on the target system.

The weakness exists in the detect.c and stream-tcp.c source code files due to improper security restrictions. A remote attacker can submit specially crafted data from a malicious server and bypass security restrictions.

Suricata
Fedora
suricata

Update to version 4.0.4.

suricata - addressed in versions 4.0.4-1.el7, 4.0.4-1.fc27

• Exploit #6415 - Suricata < 4.0.4 - IDS Detection Bypass (June 17, 2021)

• https://github.com/OISF/suricata/pull/3202/commits/e1ef57c848bbe4e567d5d4b66d346a742e3f77a1

• Security restrictions bypass in Suricata
• Fedora 27 update for suricata
• Fedora EPEL 7 update for suricata