The prep_reprocess_req function in do_tgs_req.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.5 does not properly perform service-principal realm referral, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted TGS-REQ request.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2013-1416 from the MITRE CVE dictionary dictionary and NIST NVD.
This issue did not affect the versions of krb5 as shipped with Red Hat Enterprise Linux 4 and 5.
| Base Score | 4 |
|---|---|
| Base Metrics | AV:N/AC:L/Au:S/C:N/I:N/A:P |
| Access Vector | Network |
| Access Complexity | Low |
| Authentication | Single |
| Confidentiality Impact | None |
| Integrity Impact | None |
| Availability Impact | Partial |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Enterprise Linux 6 (krb5) | RHSA-2013:0748 | 2013-04-16 |
| Platform | Package | State |
|---|---|---|
| Red Hat JBoss EWS 2 | krb5 | Will not fix |
| Red Hat Enterprise Linux 5 | krb5 | Not affected |
| Red Hat Enterprise Linux 4 | krb5 | Not affected |
Vulmon