sendmail decode alias vulnerability
Description
The Sendmail "decode" alias can be used by remote attackers to overwrite sensitive files. Older versions of sendmail (generally released before 1992) were configured with a "decode" mail alias. All mail sent to this alias is piped through the uudecode program.
Since the uudecode format allows the filename to be specified in the encoded data, this makes it trivially easy for remote users to overwrite any file on the target system. This vulnerability is compounded by the fact that sendmail is usually configured to run as root (allowing remote users to overwrite sensitive files like /etc/passwd).
Solution(s)
- smtp-sendmail-decode
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