Input validation error in OTRS

1) Input validation error

EUVDB-ID: #VU45217

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2010-4767

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

Open Ticket Request System (OTRS) before 2.3.6 does not properly handle e-mail messages in which the From line contains UTF-8 characters associated with diacritical marks and an invalid charset, which allows remote attackers to cause a denial of service (duplicate tickets and duplicate auto-responses) by sending a crafted message to a POP3 mailbox.

Mitigation

Install update from vendor's website.

Vulnerable software versions

OTRS: 0.5 - 2.3.4

CPE2.3

• cpe:2.3:a:otrs_org:open_ticket_request_system:0.5:*:*:*:*:*:*:*
• cpe:2.3:a:otrs_org:open_ticket_request_system:1.0:*:*:*:*:*:*:*
• cpe:2.3:a:otrs_org:open_ticket_request_system:1.0.0:*:*:*:*:*:*:*

External links

https://bugs.otrs.org/show_bug.cgi?id=3426
https://source.otrs.org/viewvc.cgi/otrs/CHANGES?revision=1.1807

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.