drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Ausführen beliebiger Kommandos in bsd-mailx
Name: |
Ausführen beliebiger Kommandos in bsd-mailx |
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ID: |
USN-2455-1 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 10.04 LTS, Ubuntu 12.04 LTS, Ubuntu 14.04 LTS, Ubuntu 14.10 |
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Datum: |
Mi, 7. Januar 2015, 21:40 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-7844
https://launchpad.net/ubuntu/+source/bsd-mailx/8.1.2-0.20131005cvs-1ubuntu0.14.04.1
https://launchpad.net/ubuntu/+source/bsd-mailx/8.1.2-0.20131005cvs-1ubuntu0.14.10.1 |
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Applikationen: |
bsd-mailx |
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Originalnachricht |
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========================================================================== Ubuntu Security Notice USN-2455-1 January 07, 2015
bsd-mailx vulnerability ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.10 - Ubuntu 14.04 LTS - Ubuntu 12.04 LTS - Ubuntu 10.04 LTS
Summary:
bsd-mailx could be made to run programs if it parsed a specially crafted email address.
Software Description: - bsd-mailx: simple mail user agent
Details:
It was discovered that bsd-mailx contained a feature that allowed syntactically valid email addresses to be treated as shell commands. A remote attacker could possibly use this issue with a valid email address to execute arbitrary commands.
This functionality has now been disabled by default, and can be re-enabled with the "expandaddr" configuration option. This update alone does not remove all possibilities of command execution. In environments where scripts use mailx to process arbitrary email addresses, it is recommended to modify them to use a "--" separator before the address to properly handle those that begin with "-".
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 14.10: bsd-mailx 8.1.2-0.20131005cvs-1ubuntu0.14.10.1
Ubuntu 14.04 LTS: bsd-mailx 8.1.2-0.20131005cvs-1ubuntu0.14.04.1
Ubuntu 12.04 LTS: bsd-mailx 8.1.2-0.20111106cvs-1ubuntu0.1
Ubuntu 10.04 LTS: bsd-mailx 8.1.2-0.20090911cvs-2ubuntu1.1
In general, a standard system update will make all the necessary changes.
References: http://www.ubuntu.com/usn/usn-2455-1 CVE-2014-7844
Package Information:
https://launchpad.net/ubuntu/+source/bsd-mailx/8.1.2-0.20131005cvs-1ubuntu0.14.10.1
https://launchpad.net/ubuntu/+source/bsd-mailx/8.1.2-0.20131005cvs-1ubuntu0.14.04.1 https://launchpad.net/ubuntu/+source/bsd-mailx/8.1.2-0.20111106cvs-1ubuntu0.1 https://launchpad.net/ubuntu/+source/bsd-mailx/8.1.2-0.20090911cvs-2ubuntu1.1
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