CVE-2018-18956 Information

Description

The ProcessMimeEntity function in util-decode-mime.c in Suricata 4.x before 4.0.6 allows remote attackers to cause a denial of service (segfault and daemon crash) via crafted input to the SMTP parser as exploited in the wild in November 2018.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

https://lists.openinfosecfoundation.org/pipermail/oisf-users/2018-November/016316.html https://lists.openinfosecfoundation.org/pipermail/oisf-users/2018-October/016227.html https://redmine.openinfosecfoundation.org/issues/2658change-10374

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5