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Ubuntu Security Notice USN-2473-1
January 14, 2015

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

– Ubuntu 14.04 LTS
– Ubuntu 12.04 LTS
– Ubuntu 10.04 LTS

Summary:

date and touch could be made to crash or run programs if they
handled specially crafted input.

Software Description:
– coreutils: GNU core utilities

Details:

It was discovered that the distcheck rule in dist-check.mk in GNU
coreutils allows local users to gain privileges via a symlink attack
on a directory tree under /tmp. This issue only affected Ubuntu 10.04 LTS.
(CVE-2009-4135)

Bertrand Jacquin and Fiedler Roman discovered date and touch incorrectly
handled user-supplied input. An attacker could possibly use this to cause
a denial of service or potentially execute code. (CVE-2014-9471)

Update instructions:

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

Ubuntu 14.04 LTS:
coreutils 8.21-1ubuntu5.1

Ubuntu 12.04 LTS:
coreutils 8.13-3ubuntu3.3

Ubuntu 10.04 LTS:
coreutils 7.4-2ubuntu3.1

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

References:
http://www.ubuntu.com/usn/usn-2473-1
CVE-2009-4135, CVE-2014-9471

Package Information:
https://launchpad.net/ubuntu/+source/coreutils/8.21-1ubuntu5.1
https://launchpad.net/ubuntu/+source/coreutils/8.13-3ubuntu3.3
https://launchpad.net/ubuntu/+source/coreutils/7.4-2ubuntu3.1

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