#VU12158 Poison null byte in OpenLiteSpeed - CVE-2010-2333

Vulnerability identifier: #VU12158

Vulnerability risk: Low

CVSSv4.0: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:A/U:Clear]

CVE-ID: CVE-2010-2333

CWE-ID: CWE-626

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
OpenLiteSpeed
Server applications / Web servers

Vendor: LiteSpeed Technologies

Description
The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.

The weakness exists due to poison null byte. A remote attacker can read the source code of scripts via an HTTP request with a null byte followed by a .txt file extension.

Mitigation
Update to version 4.0.15.

Vulnerable software versions

OpenLiteSpeed: 4.0 - 4.0.14

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External links
https://www.litespeedtech.com/support/forum/threads/litespeed-hacked.4078/

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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. However, a fully functional exploit for this vulnerability is available.