Vulnerability identifier: #VU12158

Vulnerability risk: Low

CVSSv3.1: 4.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:F/RL:O/RC:C]

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

---

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

---

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.