Title: rcvtty Arbitrary Command Execution Vulnerability
Severity: MODERATE
Description:
rcvtty is a component of the unix NH mail system. The version of rcvtty for BSD/OS systems is known to contain a vulnerability that may allow local users to elevate their privileges.
The problem occurs in the ability of rcvtty to execute programs on the system without first dropping SGID priviledges. A shell script run through rcvtty would result in the contents of the shell script being executed with a SGID of tty. This creates the potential for a malicious user to gain elevated system priviledges.
Affected Products:
- BSDI BSD/OS 3.0.0
- BSDI BSD/OS 3.1.0
- BSDI BSD/OS 4.0.0
- BSDI BSD/OS 4.0.1
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