openSUSE Security Update: Security update for exim
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Announcement ID: openSUSE-SU-2016:0721-1
Rating: important
References: #968844
Cross-References: CVE-2016-1531
Affected Products:
openSUSE Leap 42.1
openSUSE 13.2
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An update that fixes one vulnerability is now available.

Description:

This update to exim 4.86.2 fixes the following issues:

* CVE-2016-1531: local privilege escalation for set-uid root exim when
using ‘perl_startup’ (boo#968844)

Important: Exim now cleans the complete execution environment by default.
This affects Exim and subprocesses such as transports calling other
programs. The following new options are supported to adjust this behaviour:
* keep_environment
* add_environment A warning will be printed upon startup if none of these
are configured.

Also includes upstream changes, improvements and bug fixes:
* Support for using the system standard CA bundle.
* New expansion items $config_file, $config_dir, containing the file and
directory name of the main configuration file. Also $exim_version.
* New “malware=” support for Avast.
* New “spam=” variant option for Rspamd.
* Assorted options on malware= and spam= scanners.
* A commandline option to write a comment into the logfile.
* A logging option for slow DNS lookups.
* New ${env {<variable>}} expansion.
* A non-SMTP authenticator using information from TLS client
certificates.
* Main option “tls_eccurve” for selecting an Elliptic Curve for TLS.
* Main option “dns_trust_aa” for trusting your local nameserver at the
same level as DNSSEC.

Patch Instructions:

To install this openSUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product:

– openSUSE Leap 42.1:

zypper in -t patch openSUSE-2016-326=1

– openSUSE 13.2:

zypper in -t patch openSUSE-2016-326=1

To bring your system up-to-date, use “zypper patch”.

Package List:

– openSUSE Leap 42.1 (i586 x86_64):

exim-4.86.2-8.1
exim-debuginfo-4.86.2-8.1
exim-debugsource-4.86.2-8.1
eximon-4.86.2-8.1
eximon-debuginfo-4.86.2-8.1
eximstats-html-4.86.2-8.1

– openSUSE 13.2 (i586 x86_64):

exim-4.86.2-3.10.1
exim-debuginfo-4.86.2-3.10.1
exim-debugsource-4.86.2-3.10.1
eximon-4.86.2-3.10.1
eximon-debuginfo-4.86.2-3.10.1
eximstats-html-4.86.2-3.10.1

References:

https://www.suse.com/security/cve/CVE-2016-1531.html
https://bugzilla.suse.com/968844

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