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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2018-6794 Detail

Description

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.


Severity

 


CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  5.3 MEDIUM
Vector:  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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

Weakness Enumeration

CWE-ID CWE Name Source
CWE-693 Protection Mechanism Failure cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

6 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-6794
NVD Published Date:
02/07/2018
NVD Last Modified:
03/01/2019
Source:
MITRE