Input validation error in Suricata



| Updated: 2020-08-08
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-14568
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Suricata
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor Open Information Security Foundation

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Input validation error

EUVDB-ID: #VU36824

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2018-14568

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to manipulate data.

Suricata before 4.0.5 stops TCP stream inspection upon a TCP RST from a server. This allows detection bypass because Windows TCP clients proceed with normal processing of TCP data that arrives shortly after an RST (i.e., they act as if the RST had not yet been received).

Mitigation

Install update from vendor's website.

Vulnerable software versions

Suricata: 4.0.0 - 4.0.4

CPE2.3 External links

https://github.com/kirillwow/ids_bypass
https://github.com/OISF/suricata/pull/3428/commits/843d0b7a10bb45627f94764a6c5d468a24143345
https://redmine.openinfosecfoundation.org/issues/2501
https://suricata-ids.org/2018/07/18/suricata-4-0-5-available/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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