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VPR Score: 7.4
SynopsisThe remote Debian host is missing a security-related update.
DescriptionA local root privilege escalation vulnerability was found in Exim, Debian's default mail transfer agent, in configurations using the'perl_startup' option (Only Exim via exim4-daemon-heavy enables Perl support).
To address the vulnerability, updated Exim versions clean the complete execution environment by default, affecting Exim and subprocesses such as transports calling other programs, and thus may break existing installations. New configuration options (keep_environment, add_environment) were introduced to adjust this behavior.
More information can be found in the upstream advisory at https://www.exim.org/static/doc/CVE-2016-1531.txt
SolutionUpgrade the exim4 packages.
For the oldstable distribution (wheezy), this problem has been fixed in version 4.80-7+deb7u2.
For the stable distribution (jessie), this problem has been fixed in version 4.84.2-1.