Ubuntu Security Notice 547-1 - Tavis Ormandy and Will Drewry discovered multiple flaws in the regular expression handling of PCRE. By tricking a user or service into running specially crafted expressions via applications linked against libpcre3, a remote attacker could crash the application, monopolize CPU resources, or possibly execute arbitrary code with the application's privileges.
66bc5ad0bb37a4068f3555dae6e8753ea5e7fa341175c53f8af72d6e933363b5