Out-of-bounds read in Suricata



| Updated: 2020-08-08
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-10242
CWE-ID CWE-125
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Suricata
Server applications / IDS/IPS systems, Firewalls and proxy servers

Debian Linux
Operating systems & Components / Operating system

Vendor Open Information Security Foundation
Debian

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Out-of-bounds read

EUVDB-ID: #VU36029

Risk: Medium

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

CVE-ID: CVE-2018-10242

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

Suricata version 4.0.4 incorrectly handles the parsing of the SSH banner. A malformed SSH banner can cause the parsing code to read beyond the allocated data because SSHParseBanner in app-layer-ssh.c lacks a length check.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Suricata: 4.0.4

Debian Linux: 4.0.4 - 8.0

CPE2.3 External links

https://lists.debian.org/debian-lts-announce/2019/04/msg00010.html
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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