CVE-2013-3266: Input Validation
First published: Thu May 02 2013(Updated: )
The nfsrvd_readdir function in sys/fs/nfsserver/nfs_nfsdport.c in the new NFS server in FreeBSD 8.0 through 9.1-RELEASE-p3 does not verify that a READDIR request is for a directory node, which allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code by specifying a plain file instead of a directory.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| FreeBSD Kernel | =8.0 | |
| FreeBSD Kernel | =8.1 | |
| FreeBSD Kernel | =8.2 | |
| FreeBSD Kernel | =8.3 | |
| FreeBSD Kernel | =9.0 | |
| FreeBSD Kernel | =9.1 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2013-3266?
CVE-2013-3266 is classified as having a moderate severity due to its potential for causing denial of service and arbitrary code execution.
How do I fix CVE-2013-3266?
To fix CVE-2013-3266, update your FreeBSD system to a patched version, usually found in newer releases post-9.1-RELEASE-p3.
What software versions are affected by CVE-2013-3266?
CVE-2013-3266 affects FreeBSD versions 8.0 through 9.1-RELEASE-p3.
What type of attack does CVE-2013-3266 enable?
CVE-2013-3266 enables remote attackers to cause a denial of service or potentially execute arbitrary code through improper handling of READDIR requests.
Is there a workaround for CVE-2013-3266?
Currently, the best workaround for CVE-2013-3266 is to limit access to the NFS service until a system update can be performed.
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