RPC: RPC.statd Linux Remote Format String Attack (5)
This signature detects attempts to exploit a known vulnerability in the Linux statd program. Attackers can send a maliciously crafted format string, which, if successful, can allow them to remotely execute arbitrary code with statd user privileges.
Extended Description
A vulnerability exists in the 'rpc.statd' program, which is part of the 'nfs-utils' package that is shipped with a number of popular Linux distributions. Because of a format-string vulnerability when calling the 'syslog()' function, a remote attacker can execute code as root. The 'rpc.statd' server is an RPC server that implements the Network Status and Monitor RPC protocol. It's a component of the Network File System (NFS) architecture. The logging code in 'rpc.statd' uses the 'syslog()' function, passing it as the format string user-supplied data. A malicious user can construct a format string that injects executable code into the process address space and overwrites a function's return address, thus forcing the program to execute the code. The 'rpc.statd' server requires root privileges for opening its network socket, but fails to drop these privileges later on. Therefore, code run by the malicious user will execute with root privileges. Debian, Red Hat, and Connectiva have all released advisories. Presumably, any Linux distribution that runs the statd process is vulnerable unless patched for the problem.
Affected Products
Suse linux
Short Name
RPC:RPC.STATD:STATD-FMT-STR5
Severity
Critical
Recommended
False
Recommended Action
Drop
Category
RPC
Keywords
(5) Attack CVE-2000-0666 Format Linux RPC.statd Remote String bid:1480
Release Date
02/22/2006
Supported Platforms
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3
Sigpack Version
3336
Port
TCP/32769
False Positive
Unknown
Vendors
Red_hat
Conectiva
Suse
Debian
Trustix
CVSS Score
10.0