Vulnerability identifier: #VU61024

Vulnerability risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-41193

CWE-ID: CWE-134

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
wire-avs
Web applications / Modules and components for CMS

Vendor:

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a format string error. A remote attacker can supply a specially crafted input that contains format string specifiers and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

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External links
http://github.com/wireapp/wire-avs/security/advisories/GHSA-2j6v-xpf3-xvrv
http://github.com/wireapp/wire-avs/commit/40d373ede795443ae6f2f756e9fb1f4f4ae90bbe

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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.