Ubuntu Security Notice 3112-1 - Catalin Dumitru discovered that URLs of resources loaded after a navigation start could be leaked to the following page via the Resource Timing API. If a user were tricked in to opening a specially crafted website in a browsing context, an attacker could potentially exploit this to obtain sensitive information. Christoph Diehl, Andrew McCreight, Dan Minor, Byron Campen, Jon Coppeard, Steve Fink, Tyson Smith, and Carsten Book discovered multiple memory safety issues in Thunderbird. If a user were tricked in to opening a specially crafted message, an attacker could potentially exploit these to cause a denial of service via application crash, or execute arbitrary code. Various other issues were also addressed.
b8d665c1a846400e1f7e964a15a632b19104b1717e44ba9ec8f2ec975496481eDebian Linux Security Advisory 3674-1 - Multiple security issues have been found in the Mozilla Firefox web implementation errors may lead to the execution of arbitrary code or information disclosure.
d362acfe2486824ea91988a8754f3bc96217e6e2461aa1a8ec6a1c370244e300Red Hat Security Advisory 2016-1912-01 - Mozilla Firefox is an open source web browser. This update upgrades Firefox to version 45.4.0 ESR. Security Fix: Multiple flaws were found in the processing of malformed web content. A web page containing malicious content could cause Firefox to crash or, potentially, execute arbitrary code with the privileges of the user running Firefox.
467f9f0c4185f7eeab096f04d27efb9531ee7b702be7fa9ed85b474eff19cb04Ubuntu Security Notice 3044-1 - Gustavo Grieco discovered an out-of-bounds read during XML parsing in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via application crash, or obtain sensitive information. Toni Huttunen discovered that once a favicon is requested from a site, the remote server can keep the network connection open even after the page is closed. A remote attacker could potentially exploit this to track users, resulting in information disclosure. Various other issues were also addressed.
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