Vulnerability identifier: #VU51861

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-18180

CWE-ID: CWE-835

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
OTRS
Web applications / Other software

Vendor: otrs.org

Description

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

Improper Check for filenames with overly long extensions in PostMaster (sending in email) or uploading files (e.g. attaching files to mails) of ((OTRS)) Community Edition and OTRS allows an remote attacker to cause an endless loop. This issue affects: OTRS AG: ((OTRS)) Community Edition 5.0.x version 5.0.38 and prior versions; 6.0.x version 6.0.23 and prior versions. OTRS AG: OTRS 7.0.x version 7.0.12 and prior versions.

Mitigation
Install update from vendor's website.

Vulnerable software versions

OTRS: 5.0.0 - 6.0.13

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External links
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00038.html
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00066.html
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00077.html
http://community.otrs.com/security-advisory-2019-15-security-update-for-otrs-framework/

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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.