CVE-2015-8954

Publication date 20 March 2017

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

The MemcmpLowercase function in Suricata before 2.0.6 improperly excludes the first byte from comparisons, which might allow remote attackers to bypass intrusion-prevention functionality via a crafted HTTP request.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
suricata	19.04 disco	Not affected
	18.10 cosmic	Not affected
	18.04 LTS bionic	Not affected
	17.10 artful	Not affected
	17.04 zesty	Not affected
	16.10 yakkety	Not affected
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Ignored end of life

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
suricata	Upstream: https://redmine.openinfosecfoundation.org/projects/suricata/repository/revisions/17dfd59bc31a21e103e2f1216443cd1418398aa9 Upstream: https://redmine.openinfosecfoundation.org/projects/suricata/repository/revisions/0d910bed1d54e44e4a6aed8fcbeecf03b947d7a5

Severity score breakdown

CVSS version: CVSS v3.0

Base score 9.8 · Critical

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality impact	High
Integrity impact	High
Availability impact	High

Scores

Parameter	Value
Base score	9.8 · Critical
Exploitability score	-
Impact score	-

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