CVE-2010-4021
The MITRE CVE dictionary describes this issue as:
The Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.7 does not properly restrict the use of TGT credentials for armoring TGS requests, which might allow remote authenticated users to impersonate a client by rewriting an inner request, aka a "KrbFastReq forgery issue."
Find out more about CVE-2010-4021 from the MITRE CVE dictionary dictionary and NIST NVD.
Statement
Not vulnerable. This issue did not affect the versions of krb5 as shipped with Red Hat Enterprise Linux 4, 5, or 6.
CVSS v2 metrics
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
| Base Score | 2.1 |
|---|---|
| Base Metrics | AV:N/AC:H/Au:S/C:N/I:P/A:N |
| Access Vector | Network |
| Access Complexity | High |
| Authentication | Single |
| Confidentiality Impact | None |
| Integrity Impact | Partial |
| Availability Impact | None |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
Acknowledgements
Red Hat would like to thank the MIT Kerberos Team for reporting this issue.CVE description copyright © 2017, The MITRE Corporation