Use-after-free vulnerability in the doImageText function in dix/dixfonts.c in the xorg-server module before 1.14.4 in X.Org X11 allows remote authenticated users to cause a denial of service (daemon crash) or possibly execute arbitrary code via a crafted ImageText request that triggers memory-allocation failure.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2013-4396 from the MITRE CVE dictionary dictionary and NIST NVD.
| Base Score | 7.4 |
|---|---|
| Base Metrics | AV:A/AC:M/Au:S/C:C/I:C/A:C |
| Access Vector | Adjacent Network |
| Access Complexity | Medium |
| Authentication | Single |
| Confidentiality Impact | Complete |
| Integrity Impact | Complete |
| Availability Impact | Complete |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Enterprise Linux 5 (xorg-x11-server) | RHSA-2013:1426 | 2013-10-15 |
| Red Hat Enterprise Linux 6 (xorg-x11-server) | RHSA-2013:1426 | 2013-10-15 |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 7 | xorg-x11-server | Not affected |
Vulmon