Vulnerability identifier: #VU59823

Vulnerability risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-21679

CWE-ID: CWE-285

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Istio
Web applications / Other software

Vendor: Istio

Description

The vulnerability allows a remote attacker to bypass authorization check.

The vulnerability exists due to incorrect configuration for proxies in the "hosts" and "notHosts" fields. A remote attacker can cause requests to accidentally bypass or get rejected by the authorization policy.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Istio: 1.12.0 - 1.12.1

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External links
http://istio.io/latest/news/security/istio-security-2022-001

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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.