#VU35588 Improper Check for Unusual or Exceptional Conditions in Suricata - CVE-2019-10051

Vulnerability identifier: #VU35588

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-2019-10051

CWE-ID: CWE-754

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 non-authenticated attacker to perform a denial of service (DoS) attack.

An issue was discovered in Suricata 4.1.3. If the function filetracker_newchunk encounters an unsafe "Some(sfcm) => { ft.new_chunk }" item, then the program enters an smb/files.rs error condition and crashes.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Suricata: 4.1.3 - 4.1.4

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External links
https://github.com/OISF/suricata/pull/3734
https://redmine.openinfosecfoundation.org/issues/2896
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.