Bug 1646981 (CVE-2018-18956)

Summary: CVE-2018-18956 suricata: Segmentation fault in the ProcessMimeEntity function
Product: [Other] Security Response Reporter: Andrej Nemec <anemec>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED UPSTREAM QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: athmanem, jmlich83, jtfas90, sgrubb
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard: impact=low,public=20181005,reported=20181105,source=cve,cvss3=3.7/CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L,fedora-all/suricata=affected,epel-7/suricata=affected
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-06-10 10:42:20 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
Bug Depends On: 1646983, 1646984    
Bug Blocks:    

Description Andrej Nemec 2018-11-06 13:07:22 UTC
The ProcessMimeEntity function in util-decode-mime.c in Suricata 4.x through 4.0.5 allows remote attackers to cause a denial of service (segfault and daemon crash) via crafted input to the SMTP parser.

References:

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

Comment 1 Andrej Nemec 2018-11-06 13:07:55 UTC
Created suricata tracking bugs for this issue:

Affects: epel-7 [bug 1646984]
Affects: fedora-all [bug 1646983]

Comment 2 Product Security DevOps Team 2019-06-10 10:42:20 UTC
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.