NFS server rpc.mountd realpath() buffer overflow
| nfs-rpcmountd-realpath-bo (24347) |  High Risk |
Description:
The NFS server package included with multiple Linux distributions is vulnerable to a buffer overflow in the rpc.mountd realpath() function. rpc.mountd is the service that handles file system mount requests on Network File Systems (NFS). An attacker with the ability to create symlinks to any of the file systems on the vulnerable system could exploit this vulnerability to execute arbitrary code on the system with root privileges.
Platforms Affected:
- Debian, Debian Linux 3.0
- Debian, Debian Linux 3.1
- SuSE, SuSE Linux 10.0
- SuSE, SuSE Linux 9.1
- SuSE, SuSE Linux 9.2
- SuSE, SuSE Linux 9.3
Remedy:
For Debian GNU/Linux:
Refer to DSA-975-1 for patch, upgrade, or suggested workaround information. See References.
For SUSE Linux:
Refer to SUSE Security Announcement SUSE-SA:2006:005 for upgrade or workaround information. See References.
For other distributions:
Contact your vendor for patch or upgrade information.
Consequences:
Gain Privileges
References:
- BID-16388: NFS-SERVER Remote Buffer Overflow Vulnerability
- CVE-2006-0043: Buffer overflow in the realpath function in nfs-server rpc.mountd, as used in SUSE Linux 9.1 through 10.0, allows local users to execute arbitrary code via unspecified vectors involving mount requests and symlinks.
- DSA-975: nfs-user-server -- buffer overflow
- SA18614: nfs-server "rpc.mountd" Buffer Overflow Vulnerability
- SUSE-SA:2006:005: nfs-server/rpc.mountd remote code execution
- VUPEN/ADV-2006-0348: Nfs-server rpc.mountd realpath Remote Buffer Overflow Vulnerability
Reported:
Jan 26, 2006
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