Vulnerability identifier: #VU71473

Vulnerability risk: High

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-4254

CWE-ID: CWE-90

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
SSSD
Web applications / Remote management & hosting panels

Vendor: SSSD

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to improper input validation in libsss_certmap functionality when validating data used in DLAP queries. A remote non-authenticated attacker can use a specially crafted certificate to bypass authentication process and gain control of the admin account, leading to full domain takeover.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

SSSD: 1.15.3 - 2.3.0

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External links
http://bugzilla.redhat.com/show_bug.cgi?id=2149894

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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.