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The host is installed with Google Chrome before 68.0.3440.75 or Mozilla Firefox before 70.0 and is prone to a heap buffer overflow vulnerability. A flaw is present in the application, which fails to handle unspecified vectors. Successful exploitation allows attackers to have unspecified impact.

Mozilla Firefox 70, Mozilla Firefox ESR 68.2 and Mozilla Thunderbird 68.2: When storing a value in IndexedDB, the value's prototype chain is followed and it was possible to retain a reference to a locale, delete it, and subsequently reference it. This resulted in a use-after-free and a potentially exploitable crash.

Mozilla Firefox 70, Mozilla Firefox ESR 68.2 and Mozilla Thunderbird 68.2: An attacker could have caused 4 bytes of HMAC output to be written past the end of a buffer stored on the stack. This could be used by an attacker to execute arbitrary code or more likely lead to a crash.

Mozilla Firefox 70, Mozilla Firefox ESR 68.2 and Mozilla Thunderbird 68.2: A fixed-size stack buffer could overflow in nrappkit when doing WebRTC signaling. This resulted in a potentially exploitable crash in some instances.

Mozilla Firefox 70, Mozilla Firefox ESR 68.2 and Mozilla Thunderbird 68.2: By using a form with a data URI it was possible to gain access to the privileged codeJSONView/code object that had been cloned into content. Impact from exposing this object appears to be minimal, however it was a bypass of existing defense in depth mechanisms.

Mozilla Firefox 70, Mozilla Firefox ESR 68.2 and Mozilla Thunderbird 68.2: If two same-origin documents set document.domain differently to become cross-origin, it was possible for them to call arbitrary DOM methods/getters/setters on the now-cross-origin window.

Mozilla Firefox 70, Mozilla Firefox ESR 68.2 and Mozilla Thunderbird 68.2: Failure to correctly handle null bytes when processing HTML entities resulted in Firefox incorrectly parsing these entities. This could have led to HTML comment text being treated as HTML which could have led to XSS in a web application under certain conditions. It could have also led to HTML entities being masked from filt ...

Mozilla Firefox 70, Mozilla Firefox ESR 68.2 and Mozilla Thunderbird 68.2: Mozilla developers and community members Bob Clary, Jason Kratzer, Aaron Klotz, Iain Ireland, Tyson Smith, Christian Holler, Steve Fink, Honza Bambas, Byron Campen, and Cristian Brindusan reported memory safety bugs present in Firefox 69 and Firefox ESR 68.1. Some of these bugs showed evidence of memory corruption and we pr ...

Mozilla Firefox 70, Mozilla Firefox ESR 68.2, Mozilla Thunderbird 68.2, Google Chrome, Apple iTunes and iCloud: In libexpat before 2.2.8, crafted XML input could fool the parser into changing from DTD parsing to document parsing too early. A subsequent call to code XML_GetCurrentLineNumber/code or codeXML_GetCurrentColumnNumber/code then resulted in a heap-based buffer over-read.

Mozilla Firefox 70 : An object tag with a data URI did not correctly inherit the document's Content Security Policy. This allowed a CSP bypass in a cross-origin frame if the document's policy explicitly allowed codedata:/code URIs.


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