Main Vulnerability Database Vulnerabilities #VU64985

Configuration in Kerberos 5 - CVE-2010-4021

Published: July 7, 2022

Vulnerability identifier: #VU64985

CSH Severity: Low

CVSS v4: 1 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2010-4021

CWE-ID: CWE-16

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote user to modify files on the system.

The vulnerability exists due to MIT Kerberos 5 does not properly restrict the use of TGT credentials for armoring TGS requests. A remote authenticated user can impersonate a client by rewriting an inner request, aka a KrbFastReq forgery issue.

Affected software

Kerberos 5
IBM Security Verify Access

How to mitigate CVE-2010-4021

Install updates from vendor's website.

Kerberos 5 - update to 1.7.1
IBM Security Verify Access - update to 10.0.4.0

External References

Related Security Bulletins