Title: Sendfile Local Privileged Arbitrary Command Execution Vulnerability
Severity: MODERATE
Description:
Sendfile is an implementation of the SAFT (simple asynchronous file transfer) protocol for UNIX systems.
The Sendfile daemon, sendfiled, allows local users to configure a post-processing command to pipe data to a user-specified program when new files are received.
When a file is received, the daemon attempts to drop privileges to the recipient user's level prior to running the user-specified command. However, only the effective user and group id are set, making it possible for a user to reclaim the elevated daemon privileges.
As a result, it is possible for an attacker to gain superuser privileges.
Affected Products:
- Sendfile Sendfile 1.4.0
- Sendfile Sendfile 1.5.0
- Sendfile Sendfile 1.6.0
- Sendfile Sendfile 2.1.0
References:
- Ulli Horlacher: Sendfile Homepage (in English)
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