USN-1589-2: GNU C Library regression

Releases

• Ubuntu 8.04

Packages

• 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

• libc6 - 2.7-10ubuntu8.3

After a standard system update you need to reboot your computer to make
all the necessary changes.

References

• CVE-2012-3480

Related notices

• USN-1589-1: libc6, eglibc, glibc