Mozilla Firefox was updated to version 38.3.0 ESR , fixing bugs and security issues. * MFSA 2015-96/CVE-2015-4500/CVE-2015-4501 Miscellaneous memory safety hazards * MFSA 2015-101/CVE-2015-4506 Buffer overflow in libvpx while parsing vp9 format video * MFSA 2015-105/CVE-2015-4511 Buffer overflow while decoding WebM video * MFSA 2015-106/CVE-2015-4509 Use-after-free while manipulating HTML media content * MFSA 2015-110/CVE-2015-4519 Dragging and dropping images exposes final URL after redirects * MFSA 2015-111/CVE-2015-4520 Errors in the handling of CORS preflight request headers * MFSA 2015-112/CVE-2015-4517/CVE-2015-4521/CVE-2015-4522 CVE-2015-7174/CVE-2015-7175/CVE-2015-7176/CVE-2015-7177 CVE-2015-7180 Vulnerabilities found through code inspection More details can be found on https://www.mozilla.org/en-US/security/advisories/