#VU71473 LDAP injection in SSSD - CVE-2022-4254

Vulnerability identifier: #VU71473

Vulnerability risk: High

CVSSv4.0: 8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber]

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
https://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.