Red Hat Enterprise Linux 8 update for krb5



Published: 2022-11-28
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-42898
CWE-ID CWE-190
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Red Hat Enterprise Linux for ARM 64
Operating systems & Components / Operating system

Red Hat Enterprise Linux for Power, little endian
Operating systems & Components / Operating system

Red Hat Enterprise Linux for IBM z Systems
Operating systems & Components / Operating system

Red Hat Enterprise Linux for x86_64
Operating systems & Components / Operating system

krb5 (Red Hat package)
Operating systems & Components / Operating system package or component

Vendor Red Hat Inc.

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Integer overflow

EUVDB-ID: #VU69337

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2022-42898

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows a remote user to execute arbitrary code on the target system.

The vulnerability exists due to an integer overflow within the S4U2Proxy handler on 32-bit systems. A remote user can send specially crafted request to the KDC server, trigger an integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux for ARM 64: 8

Red Hat Enterprise Linux for Power, little endian: 8

Red Hat Enterprise Linux for IBM z Systems: 8

Red Hat Enterprise Linux for x86_64: 8.0

krb5 (Red Hat package): before 1.18.2-22.el8_7


CPE2.3 External links

http://access.redhat.com/errata/RHSA-2022:8638

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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