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openSUSE Security Update: ecryptfs-utils: Update to fix various symlink race attacks

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Announcement ID: openSUSE-SU-2011:0902-1

Rating: important

References: #709771

Affected Products:

openSUSE 11.4

openSUSE 11.3

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An update that contains security fixes can now be installed.

 

Description:

 

This update of ecryptfs-utils fixes several security

problems:

 

- CVE-2011-1831 - Race condition when checking mountpoint

during mount.

- CVE-2011-1832 - Race condition when checking mountpoint

during unmount.

- CVE-2011-1833 - Race condition when checking source

during mount.

- CVE-2011-1834 - Improper mtab handling allowing

corruption due to resource limits, signals, etc.

- CVE-2011-1835 - Key poisoning in ecryptfs-setup-private

due to insecure temp directory.

- CVE-2011-1837 - Predictable lock counter name and

associated races.

 

 

Patch Instructions:

 

To install this openSUSE Security Update use YaST online_update.

Alternatively you can run the command listed for your product:

 

- openSUSE 11.4:

 

zypper in -t patch ecryptfs-utils-4986

 

- openSUSE 11.3:

 

zypper in -t patch ecryptfs-utils-4986

 

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

 

 

Package List:

 

- openSUSE 11.4 (i586 x86_64):

 

ecryptfs-utils-83-6.7.1

 

- openSUSE 11.4 (x86_64):

 

ecryptfs-utils-32bit-83-6.7.1

 

- openSUSE 11.3 (i586 x86_64):

 

ecryptfs-utils-83-3.3.1

 

- openSUSE 11.3 (x86_64):

 

ecryptfs-utils-32bit-83-3.3.1

 

 

References:

 

https://bugzilla.novell.com/709771

 

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