Debian update for krb5



Published: 2022-11-20
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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Debian Linux
Operating systems & Components / Operating system

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

Vendor Debian

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Integer overflow

EUVDB-ID: #VU69337

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

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

Update krb5 package to version 1.18.3-6+deb11u3.

Vulnerable software versions

Debian Linux: All versions

krb5 (Debian package): before 1.18.3-6+deb11u3

External links

http://www.debian.org/security/2022/dsa-5286


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user 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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