Input validation error in litespeed OpenLiteSpeed

1) Input validation error

EUVDB-ID: #VU30453

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-5519

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

The WebAdmin Console in OpenLiteSpeed before v1.6.5 does not strictly check request URLs, as demonstrated by the "Server Configuration > External App" screen.

Mitigation

Install update from vendor's website.

Vulnerable software versions

OpenLiteSpeed: 1.6.0 - 1.6.4

CPE2.3

• cpe:2.3:a:litespeedtech:litespeed:1.6.0:*:*:*:*:*:*:*
• cpe:2.3:a:litespeedtech:litespeed:1.6.1:*:*:*:*:*:*:*
• cpe:2.3:a:litespeedtech:litespeed:1.6.2:*:*:*:*:*:*:*

External links

https://drive.google.com/open?id=1pSciFEfjHp3kN8y5shy_zosJo7dje_fX
https://forum.openlitespeed.org/threads/openlitespeed-v1-6-5-now-available.4047/

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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