Multiple buffer overflows in GNU MPFR 2.4.0 allow context-dependent attackers to cause a denial of service (crash) via the (1) mpfr_snprintf and (2) mpfr_vsnprintf functions.
http://www.ubuntu.com/usn/USN-772-1
http://www.securityfocus.com/bid/33945
http://www.openwall.com/lists/oss-security/2009/03/02/4
http://secunia.com/advisories/35028