#VU35906 Out-of-bounds read in Suricata - CVE-2019-10050

Vulnerability identifier: #VU35906

Vulnerability risk: Medium

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

CVE-ID: CVE-2019-10050

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Suricata
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor: Open Information Security Foundation

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to length of 2 bytes. There is no validation of this length. Later on, the code tries to read at an empty position, leading to a crash. A remote attacker can perform a denial of service attack.

Mitigation
Update to version 4.1.4.

Vulnerable software versions

Suricata: 4.0.0 - 4.0.6, 4.1.0 - 4.1.3

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External links
https://lists.openinfosecfoundation.org/pipermail/oisf-announce/
https://suricata-ids.org/2019/04/30/suricata-4-1-4-released/

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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