The vfprintf function in stdio-common/vfprintf.c in GNU C Library (aka
glibc) 2.5, 2.12, and probably other versions does not "properly
restrict the use of" the alloca function when allocating the SPECS
array, which allows context-dependent attackers to bypass the
FORTIFY_SOURCE format-string protection mechanism and cause a denial
of service (crash) or possibly execute arbitrary code via a crafted
format string using positional parameters and a large number of format
specifiers, a different vulnerability than CVE-2012-3404 and
Note:References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
Disclaimer: The entry creation date may reflect when
the CVE-ID was allocated or reserved, and does not
necessarily indicate when this vulnerability was
discovered, shared with the affected vendor, publicly
disclosed, or updated in CVE.
This is an entry on the CVE
list, which standardizes names for security