[SECURITY] Fedora 30 Update: gjs-1.56.2-4.fc30

Gjs allows using GNOME libraries from Javascript. It's based on the Spidermonkey Javascript engine from Mozilla and the GObject introspection framework...

Spidermonkey - IonMonkey Unexpected ObjectGroup in ObjectGroupDispatch Operation

Spidermonkey - IonMonkey Unexpected ObjectGroup in ObjectGroupDispatch Operation While fuzzing Spidermonkey, I encountered the following commented and modified JavaScript program which crashes debug builds of the latest release version of Spidermonkey from commit...

Spidermonkey - IonMonkey Leaks JS_OPTIMIZED_OUT Magic Value to Script

Spidermonkey - IonMonkey Leaks JSOPTIMIZEDOUT Magic Value to Script IonMonkey can, during a bailout, leak an internal JSOPTIMIZEDOUT magic value to the running script. This magic value can then be used to achieve memory corruption. Prerequisites Magic Values Spidermonkey represents JavaScript...

Spidermonkey - IonMonkey Unexpected ObjectGroup in ObjectGroupDispatch Operation

While fuzzing Spidermonkey, I encountered the following commented and modified JavaScript program which crashes debug builds of the latest release version of Spidermonkey from commit https://github.com/mozilla/gecko-dev/commit/3ecf89da497cf1abe2a89d1b3c282b48e5dfac8c: function O1 this.s = 'foobar...

Spidermonkey - IonMonkey Unexpected ObjectGroup in ObjectGroupDispatch Operation Exploit

Spidermonkey IonMonkey suffers from an issue where an unexpected ObjectGroup in the ObjectGroupDispatch operation might lead to potentially unsafe code being executed. Spidermonkey: IonMonkey: unexpected ObjectGroup in ObjectGroupDispatch operation might lead to potentially unsafe code being...

Spidermonkey IonMonkey JS_OPTIMIZED_OUT Value Leak Exploit

Spidermonkey IonMonkey can, during a bailout, leak an internal JSOPTIMIZEDOUT magic value to the running script. This magic value can then be used to achieve memory corruption. Spidermonkey: IonMonkey leaks JSOPTIMIZEDOUT magic value to script Related CVE Numbers: CVE-2019-9792. TURN ON "CODE...

Spidermonkey IonMonkey JS_OPTIMIZED_OUT Value Leak

Spidermonkey: IonMonkey leaks JSOPTIMIZEDOUT magic value to script Related CVE Numbers: CVE-2019-9792. TURN ON "CODE FONT" IN THE TOP RIGHT TO CORRECTLY SEE THE CFGs! IonMonkey can, during a bailout, leak an internal JSOPTIMIZEDOUT magic value to the running script. This magic value can then be...

CVE-2016-9969

In libwebp 0.5.1, there is a double free bug in libwebpmux...

CVE-2019-9814

Mozilla developers and community members reported memory safety bugs present in Firefox 66. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox 67...

CVE-2019-9821

A use-after-free vulnerability can occur in AssertWorkerThread due to a race condition with shared workers. This results in a potentially exploitable crash. This vulnerability affects Firefox 67...

CVE-2018-18510

The about:crashcontent and about:crashparent pages can be triggered by web content. These pages are used to crash the loaded page or the browser for test purposes. This issue allows for a non-persistent denial of service DOS attack by a malicious site which links to these pages. This vulnerabilit...

SpiderMonkey - IonMonkey Compiled Code Fails to Update Inferred Property Types (Type Confusion)

SpiderMonkey - IonMonkey Compiled Code Fails to Update Inferred Property Types Type Confusion A bug in IonMonkey leaves type inference information inconsistent, which in turn allows the compilation of JITed functions that cause type confusions between arbitrary objects. Prerequisites In...

SpiderMonkey - IonMonkey Compiled Code Fails to Update Inferred Property Types (Type Confusion)

A bug in IonMonkey leaves type inference information inconsistent, which in turn allows the compilation of JITed functions that cause type confusions between arbitrary objects. Prerequisites In Spidermonkey, every JavaScript objects is an instance of the JSObject class 1. Plain JavaScript objects...

SpiderMonkey IonMonkey Type Confusion

SpiderMonkey: IonMonkey compiled code fails to update inferred property types, leading to type confusions Related CVE Numbers: CVE-2019-9813 A bug in IonMonkey leaves type inference information inconsistent, which in turn allows the compilation of JITed functions that cause type confusions betwee...

SpiderMonkey IonMonkey Type Confusion

Spidermonkey: IonMonkey's type inference is incorrect for constructors entered via OSR Related CVE Numbers: CVE-2019-9791. A bug in IonMonkeys type inference system when JIT compiling and entering a constructor function via on-stack replacement OSR allows the compilation of JITed functions that...

Spidermonkey - IonMonkey Type Inference is Incorrect for Constructors Entered via OSR

/ Spidermonkey - IonMonkey Type Inference is Incorrect for Constructors Entered via OSR A bug in IonMonkeys type inference system when JIT compiling and entering a constructor function via on-stack replacement OSR allows the compilation of JITed functions that cause type confusions between...

Spidermonkey - IonMonkey Type Inference is Incorrect for Constructors Entered via OSR

Spidermonkey - IonMonkey Type Inference is Incorrect for Constructors Entered via OSR / A bug in IonMonkeys type inference system when JIT compiling and entering a constructor function via on-stack replacement OSR allows the compilation of JITed functions that cause type confusions between...

Spidermonkey - IonMonkey Type Inference is Incorrect for Constructors Entered via OSR

/ A bug in IonMonkeys type inference system when JIT compiling and entering a constructor function via on-stack replacement OSR allows the compilation of JITed functions that cause type confusions between arbitrary objects. Prerequisites: 1. Spidermonkey can represent "plain" objects either as...

CVE-2019-9810

Incorrect alias information in IonMonkey JIT compiler for Array.prototype.slice method may lead to missing bounds check and a buffer overflow. This vulnerability affects Firefox 66.0.1, Firefox ESR 60.6.1, and Thunderbird 60.6.1...

CVE-2019-9805

A latent vulnerability exists in the Prio library where data may be read from uninitialized memory for some functions, leading to potential memory corruption. This vulnerability affects Firefox 66...