CVE Vulnerability

CVE-2018-6794

Suricata before 4.0.4 is prone to an HTTP detection bypass vulnerability in detect.c and stream-tcp.c. If a malicious server breaks a normal TCP flow and sends data before the 3-way handshake is complete, then the data sent by the malicious server will be accepted by web clients such as a web browser or Linux CLI utilities, but ignored by Suricata IDS signatures. This mostly affects IDS signatures for the HTTP protocol and TCP stream content; signatures for TCP packets will inspect such network traffic as usual.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

Scope

5.3 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://redmine.openinfosecfoundation.org/issues/2427 Third Party Advisory
https://github.com/OISF/suricata/pull/3202/commits/e1ef57c848bbe4e567d5d4b66d346a742e3f77a1 Patch Third Party Advisory
https://www.exploit-db.com/exploits/44247/ Exploit Third Party Advisory
https://suricata-ids.org/2018/02/14/suricata-4-0-4-available/ Vendor Advisory
https://lists.debian.org/debian-lts-announce/2018/12/msg00000.html Mailing List Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:suricata-ids:suricata:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
Information

Published : 2018-02-07 05:29

Updated : 2019-03-01 11:33

NVD link : CVE-2018-6794

Mitre link : CVE-2018-6794

Products Affected

Suricata

Suricata-ids

CWE
CWE-693