A vulnerability has been discovered in Courier-IMAP allowing for remote code execution with root privileges.
Package | net-mail/courier-imap on all architectures |
---|---|
Affected versions | < 4.0.6-r2 |
Unaffected versions | >= 4.0.6-r2 < 4.0.0 |
Courier-IMAP is an IMAP server which is part of the Courier mail system. It provides access only to maildirs.
CJ Kucera has discovered that some Courier-IMAP scripts don't properly handle the XMAILDIR variable, allowing for shell command injection.
A remote attacker could send specially crafted login credentials to a Courier-IMAP server instance, possibly leading to remote code execution with root privileges.
There is no known workaround at this time.
All Courier-IMAP users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-mail/courier-imap-4.0.6-r2"
Release date
April 22, 2007
Latest revision
April 23, 2007: 02
Severity
high
Exploitable
remote
Bugzilla entries