The Snort DCE/RPC preprocessor contains a buffer overflow that could result in the remote execution of arbitrary code.
| Package | Arch | Vulnerable | Unaffected |
|---|---|---|---|
| net-analyzer/snort | * | < 2.6.1.3 | >= 2.6.1.3 |
Snort is a widely deployed intrusion detection program.
The Snort DCE/RPC preprocessor does not properly reassemble certain types of fragmented SMB and DCE/RPC packets.
A remote attacker could send specially crafted fragmented SMB or DCE/RPC packets, without the need to finish the TCP handshake, that would trigger a stack-based buffer overflow while being reassembled. This could lead to the execution of arbitrary code with the permissions of the user running the Snort preprocessor.
Disable the DCE/RPC processor by commenting the 'preprocessor dcerpc' section in /etc/snort/snort.conf .
All Snort users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-analyzer/snort-2.6.1.3"
Snort contains a vulnerability in the rule matching algorithm that could result in a Denial of Service.
| Package | Arch | Vulnerable | Unaffected |
|---|---|---|---|
| net-analyzer/snort | * | < 2.6.1.2 | >= 2.6.1.2 |
Snort is a widely deployed intrusion detection program.
Randy Smith, Christian Estan and Somesh Jha discovered that the rule matching algorithm of Snort can be exploited in a way known as a "backtracking attack" to perform numerous time-consuming operations.
A remote attacker could send specially crafted network packets, which would result in the cessation of the detections and the consumption of the CPU resources.
There is no known workaround at this time.
All Snort users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-analyzer/snort-2.6.1.2"