Ubuntu Security Notice 3322-1 - It was discovered that Exim did not properly deallocate memory when processing certain command line arguments. A local attacker could use this in conjunction with another vulnerability to possibly execute arbitrary code and gain administrative privileges.
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Ubuntu Security Notice USN-3322-1
June 19, 2017
exim4 vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 17.04
- Ubuntu 16.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
Summary:
Exim could be made to run programs as an administrator.
Software Description:
- exim4: Exim is a mail transport agent
Details:
It was discovered that Exim did not properly deallocate memory when
processing certain command line arguments. A local attacker could use this
in conjunction with another vulnerability to possibly execute arbitrary
code and gain administrative privileges.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 17.04:
exim4-daemon-heavy 4.88-5ubuntu1.1
exim4-daemon-light 4.88-5ubuntu1.1
Ubuntu 16.10:
exim4-daemon-heavy 4.87-3ubuntu1.2
exim4-daemon-light 4.87-3ubuntu1.2
Ubuntu 16.04 LTS:
exim4-daemon-heavy 4.86.2-2ubuntu2.2
exim4-daemon-light 4.86.2-2ubuntu2.2
Ubuntu 14.04 LTS:
exim4-daemon-heavy 4.82-3ubuntu2.3
exim4-daemon-light 4.82-3ubuntu2.3
In general, a standard system update will make all the necessary changes.
References:
https://www.ubuntu.com/usn/usn-3322-1
CVE-2017-1000369
Package Information:
https://launchpad.net/ubuntu/+source/exim4/4.88-5ubuntu1.1
https://launchpad.net/ubuntu/+source/exim4/4.87-3ubuntu1.2
https://launchpad.net/ubuntu/+source/exim4/4.86.2-2ubuntu2.2
https://launchpad.net/ubuntu/+source/exim4/4.82-3ubuntu2.3
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