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Sicherheit: Ausführen von Code mit höheren Privilegien in Exim
Aktuelle Meldungen Distributionen
Name: Ausführen von Code mit höheren Privilegien in Exim
ID: USN-4075-1
Distribution: Ubuntu
Plattformen: Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 19.04
Datum: Do, 25. Juli 2019, 22:35
Referenzen: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-13917
Applikationen: exim

Originalnachricht

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From: Marc Deslauriers <marc.deslauriers@canonical.com>
Reply-To: Ubuntu Security <security@ubuntu.com>
To: ubuntu-security-announce@lists.ubuntu.com
Message-ID: <86d1310a-4b5f-c84e-9376-6d0cc622a5e2@canonical.com>
Subject: [USN-4075-1] Exim vulnerability

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==========================================================================
Ubuntu Security Notice USN-4075-1
July 25, 2019

exim4 vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.04
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Exim could be made to run programs as an administrator if it received
specially crafted network traffic.

Software Description:
- exim4: Exim is a mail transport agent

Details:

Jeremy Harris discovered that Exim incorrectly handled sort expansions. In
environments where sort expansions are used, a remote attacker could
possibly use this issue to execute arbitrary code as root.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 19.04:
exim4-daemon-heavy 4.92-4ubuntu1.2
exim4-daemon-light 4.92-4ubuntu1.2

Ubuntu 18.04 LTS:
exim4-daemon-heavy 4.90.1-1ubuntu1.3
exim4-daemon-light 4.90.1-1ubuntu1.3

Ubuntu 16.04 LTS:
exim4-daemon-heavy 4.86.2-2ubuntu2.4
exim4-daemon-light 4.86.2-2ubuntu2.4

In general, a standard system update will make all the necessary changes.

References:
https://usn.ubuntu.com/4075-1
CVE-2019-13917

Package Information:
https://launchpad.net/ubuntu/+source/exim4/4.92-4ubuntu1.2
https://launchpad.net/ubuntu/+source/exim4/4.90.1-1ubuntu1.3
https://launchpad.net/ubuntu/+source/exim4/4.86.2-2ubuntu2.4


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