USN-1589-2: GNU C Library regression
17 December 2012
USN-1589-1 exposed a regression in the GNU C Library floating point parser.
Releases
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
After a standard system update you need to reboot your computer to make
all the necessary changes.