Vulnerability identifier: #VU52650

Vulnerability risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-31540

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Wowza Streaming Engine
Server applications / Other server solutions

Vendor: Wowza Media Systems

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to incorrect file permissions of configuration files in the conf/ directory. A local user can read and write to all the configuration files.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Wowza Streaming Engine: 4.8.5

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External links
http://www.gruppotim.it/redteam
http://www.wowza.com/products/streaming-engine

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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