Vulnerability identifier: #VU51869

Vulnerability risk: Medium

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

CVE-ID: CVE-2020-1772

CWE-ID: CWE-200

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 gain access to sensitive information.

It's possible to craft Lost Password requests with wildcards in the Token value, which allows attacker to retrieve valid Token(s), generated by users which already requested new passwords. This issue affects: ((OTRS)) Community Edition 5.0.41 and prior versions, 6.0.26 and prior versions. OTRS: 7.0.15 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://lists.debian.org/debian-lts-announce/2020/05/msg00000.html
http://otrs.com/release-notes/otrs-security-advisory-2020-09/

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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.