The vulnerability of the Firefox browser allows a hacker to bypass the protection mechanisms of ECMAScript 5 (ES5) APIs and execute arbitrary code.

The vulnerability of Firefox browsers is related to errors in security settings. Exploiting this vulnerability allows a malicious actor to bypass the protection mechanisms of ECMAScript 5 ES5 APIs and execute arbitrary code using a specially crafted page that does not utilize ES5 mechanisms...

Mozilla Firefox and Firefox ESR Security Bypass Vulnerability (CNVD-2015-06384)

Mozilla Firefox is an open source web browser. A security vulnerability in the Mozilla Firefox NetworkUtils.cpp file allows remote attackers to bypass the ECMAScript 5 API protection mechanism, modify immutable attributes, and execute arbitrary JavaScript code with chrome privileges...

Authentication flaw

Mozilla Firefox before 41.0 allows remote attackers to bypass certain ECMAScript 5 aka ES5 API protection mechanisms and modify immutable properties, and consequently execute arbitrary JavaScript code with chrome privileges, via a crafted web page that does not use ES5 APIs...

CVE-2015-4516

CVE-2015-4516 affects Mozilla Firefox before 41.0. A crafted page can bypass ECMAScript 5 protections and modify immutable properties, allowing remote code to run with chrome privileges via JavaScript. The issue is fixed in Firefox 41.0 (and ESR tracks) per releases and security advisories; users...

CVE-2015-4516: Undefined Security Weakness

Mozilla Firefox before 41.0 allows remote attackers to bypass certain ECMAScript 5 aka ES5 API protection mechanisms and modify immutable properties, and consequently execute arbitrary JavaScript code with chrome privileges, via a crafted web page that does not use ES5 APIs...

KLA11454 Multiple vulnerabilities in SeaMonkey

Multiple vulnerabilities were found in SeaMonkey. Malicious users can exploit these vulnerabilities to execute arbitrary code, cause denial of service, bypass security restrictions and spoof user interface. Below is a complete list of vulnerabilities: 1. Multiple memory corruption vulnerabilities...

JavaScript immutable property enforcement can be bypassed — Mozilla

Mozilla developer Jeff Walden reported that in Gecko's implementation of ECMAScript 5 API's enforces non-configurable properties with logic specific to each API. Scripts that do not go through these APIs can bypass these protections and make changes to the immutable properties in violation of...

CVE-2015-4516

Mozilla Firefox before 41.0 allows remote attackers to bypass certain ECMAScript 5 aka ES5 API protection mechanisms and modify immutable properties, and consequently execute arbitrary JavaScript code with chrome privileges, via a crafted web page that does not use ES5 APIs...

UBUNTU-CVE-2015-4516

Mozilla Firefox before 41.0 allows remote attackers to bypass certain ECMAScript 5 aka ES5 API protection mechanisms and modify immutable properties, and consequently execute arbitrary JavaScript code with chrome privileges, via a crafted web page that does not use ES5 APIs...

Attacking ECMAScript Engines with Redefinition

Posted by Natalie Silvanovich = function return n; ECMAScript has a property where almost all functions and variables can be dynamically redefined. This can lead to vulnerabilities in situations where native code assumes a function or variable behaves a certain way when accessed or does not have...

Design/Logic Flaw

Mozilla Firefox before 40.0 and Firefox ESR 38.x before 38.2 do not impose certain ECMAScript 6 requirements on JavaScript object properties, which allows remote attackers to bypass the Same Origin Policy via the reviver parameter to the JSON.parse method...

CVE-2015-4478

Mozilla Firefox before 40.0 and Firefox ESR 38.x before 38.2 do not impose certain ECMAScript 6 requirements on JavaScript object properties, which allows remote attackers to bypass the Same Origin Policy via the reviver parameter to the JSON.parse method...

CVE-2015-4478

CVE-2015-4478 affects Mozilla Firefox before 40.0 and Firefox ESR 38.x before 38.2. The issue arises when parsing JSON with JSON.parse and a reviver, which can redefine non-configurable properties on JavaScript objects and bypass the Same Origin Policy. Affected products: Firefox/ESR; root cause:...

UBUNTU-CVE-2015-4478

Mozilla Firefox before 40.0 and Firefox ESR 38.x before 38.2 do not impose certain ECMAScript 6 requirements on JavaScript object properties, which allows remote attackers to bypass the Same Origin Policy via the reviver parameter to the JSON.parse method...

Redefinition of non-configurable JavaScript object properties — Mozilla

Security researcher André Bargull reported non-configurable properties on JavaScript objects can be redefined while parsing JSON in violation of the ECMAScript 6 standard. This allows malicious web content to bypass same-origin policy by editing these properties to arbitrary values...

[SECURITY] Fedora 22 Update: v8-3.14.5.10-18.fc22

V8 is Google's open source JavaScript engine. V8 is written in C++ and is u sed in Google Chrome, the open source browser from Google. V8 implements ECMASc ript as specified in ECMA-262, 3rd edition...

Firefox 3 1 to 3 4 remote command execution vulnerability analysis-vulnerability warning-the black bar safety net

0x00 Preface Some time ago, the brother in a lot of the browser in the script-level vulnerabilities upgrade for remote command execution, almost daily all over the market on all domestic browser, which has become many people relish topic. Indeed, in today's this underlyingsecuritygrowing...

[SECURITY] Fedora 20 Update: v8-3.14.5.10-17.fc20

V8 is Google's open source JavaScript engine. V8 is written in C++ and is u sed in Google Chrome, the open source browser from Google. V8 implements ECMASc ript as specified in ECMA-262, 3rd edition...

[SECURITY] Fedora 21 Update: v8-3.14.5.10-17.fc21

V8 is Google's open source JavaScript engine. V8 is written in C++ and is u sed in Google Chrome, the open source browser from Google. V8 implements ECMASc ript as specified in ECMA-262, 3rd edition...

Authentication flaw

Mozilla Firefox before 36.0 does not properly restrict transitions of JavaScript objects from a non-extensible state to an extensible state, which allows remote attackers to bypass a Caja Compiler sandbox protection mechanism or a Secure EcmaScript sandbox protection mechanism via a crafted web...