MGASA-2017-0039 Updated thunderbird packages fix security vulnerabilities

JIT code allocation can allow for a bypass of ASLR and DEP protections leading to potential memory corruption attacks. CVE-2017-5375 Use-after-free while manipulating XSL in XSLT documents. CVE-2017-5376 Hashed codes of JavaScript objects are shared between pages. This allows for pointer leaks...