Segmentation fault in Suricata - CVE-2018-18956
Published: November 7, 2018
Vulnerability identifier: #VU15746
CSH Severity: High
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-18956
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vulnerability details
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists due to segmentation fault in the ProcessMimeEntity function in util-decode-mime.c when handling malicious input. A remote attacker can supply specially crafted input to the SMTP parser, trigger segfault and cause daemon crash.
Note: according to MITRE statement, the vulnerability has been exploited in the wild in November 2018.
The weakness exists due to segmentation fault in the ProcessMimeEntity function in util-decode-mime.c when handling malicious input. A remote attacker can supply specially crafted input to the SMTP parser, trigger segfault and cause daemon crash.
Note: according to MITRE statement, the vulnerability has been exploited in the wild in November 2018.
Affected software
Suricata
Fedora
suricata
Fedora
suricata
How to mitigate CVE-2018-18956
Update to version 4.1.
Suricata - update to 4.1.0
suricata - addressed in versions 4.0.6-1.el7, 4.0.6-1.fc27, 4.0.6-1.fc28, 4.0.6-1.fc29
suricata - addressed in versions 4.0.6-1.el7, 4.0.6-1.fc27, 4.0.6-1.fc28, 4.0.6-1.fc29