Multiple vulnerabilities in Istio

Published: 2022-01-19

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2022-21679 CVE-2022-21701
CWE-ID	CWE-285 CWE-264
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Istio Web applications / Other software
Vendor	Istio

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Improper Authorization

EUVDB-ID: #VU59823

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 - Improper Authorization

Exploit availability: No

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

External links

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

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.

2) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU59825

Risk: Medium

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-21701

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls