SynopsisThe remote mail server is potentially affected by multiple vulnerabilities.
DescriptionThe remote host is running Exim, a message transfer agent (SMTP).
According to the version number in its banner, the installed version of Exim is earlier than 4.72 and thus potentially affected by one or both of the following vulnerabilities :
- An error when handling hardlinks within the mail directory during the mail delivery process can be exploited to perform unauthorized actions.
- When MBX locking is enabled, a race condition exists that could allow an attacker to change permissions of other non-root users' files, leading to denial-of- service conditions or potentially privilege escalation.
SolutionUpgrade to Exim 4.72 or later when it becomes available.