| From: |
| Marc Deslauriers <marc.deslauriers@canonical.com> |
| To: |
| ubuntu-security-announce@lists.ubuntu.com |
| Subject: |
| [USN-1589-2] GNU C Library regression |
| Date: |
| Mon, 17 Dec 2012 09:17:18 -0500 |
| Message-ID: |
| <50CF296E.6030004@canonical.com> |
| Archive-link: |
| Article, Thread
|
==========================================================================
Ubuntu Security Notice USN-1589-2
December 17, 2012
glibc regression
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 8.04 LTS
Summary:
USN-1589-1 exposed a regression in the GNU C Library floating point parser.
Software Description:
- glibc: GNU C Library
Details:
USN-1589-1 fixed vulnerabilities in the GNU C Library. One of the updates
exposed a regression in the floating point parser. This update fixes the
problem.
We apologize for the inconvenience.
Original advisory details:
It was discovered that positional arguments to the printf() family
of functions were not handled properly in the GNU C Library. An
attacker could possibly use this to cause a stack-based buffer
overflow, creating a denial of service or possibly execute arbitrary
code. (CVE-2012-3404, CVE-2012-3405, CVE-2012-3406)
It was discovered that multiple integer overflows existed in the
strtod(), strtof() and strtold() functions in the GNU C Library. An
attacker could possibly use this to trigger a stack-based buffer
overflow, creating a denial of service or possibly execute arbitrary
code. (CVE-2012-3480)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 8.04 LTS:
libc6 2.7-10ubuntu8.3
After a standard system update you need to reboot your computer to make
all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-1589-2
http://www.ubuntu.com/usn/usn-1589-1
CVE-2012-3480
Package Information:
https://launchpad.net/ubuntu/+source/glibc/2.7-10ubuntu8.3
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