Use-after-free in litespeed OpenLiteSpeed

1) Use-after-free

EUVDB-ID: #VU38230

Risk: Medium

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

CVE-ID: CVE-2015-3890

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

Use-after-free vulnerability in Open Litespeed before 1.3.10.

Mitigation

Install update from vendor's website.

Vulnerable software versions

OpenLiteSpeed: 1.3.1 - 1.3.9

External links

http://www.security-assessment.com/files/documents/advisory/Open%20Litespeed%20Use%20After%20Free%20Vulnerability.pdf

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.