Red Hat Enterprise Linux 8 update for sssd



Published: 2023-01-24
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-4254
CWE-ID CWE-90
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Red Hat Enterprise Linux Server - AUS
Operating systems & Components / Operating system

Red Hat Enterprise Linux Server - TUS
Operating systems & Components / Operating system

Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
Operating systems & Components / Operating system package or component

sssd (Red Hat package)
Operating systems & Components / Operating system package or component

Vendor Red Hat Inc.

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) LDAP injection

EUVDB-ID: #VU71473

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 - Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')

Exploit availability: No

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

Red Hat Enterprise Linux Server - AUS: 8.2

Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 8.2

Red Hat Enterprise Linux Server - TUS: 8.2

sssd (Red Hat package): before 2.2.3-20.el8_2.2

External links

http://access.redhat.com/errata/RHSA-2023:0397


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.



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