Microsoft Edge Chakra JIT - Bound Check Elimination Bug

Microsoft Edge Chakra JIT - Bound Check Elimination Bug / Chakra uses the InvariantBlockBackwardIterator class to backpropagate the information about the hoisted bound checks. But the class follows the linked list instaed of the control flow. This may lead to incorrectly remove the bound checks. ...

Sharing research and discoveries at PWN2OWN

The annual PWN2OWN exploit contest at the CanSecWest conference in Vancouver, British Columbia, Canada, brings together some of the top security talent from across the globe in a friendly competition. For the participants, these events are a platform to demonstrate world-class skills and vie for...

CVE-2018-4910

An issue was discovered in Adobe Acrobat Reader 2018.009.20050 and earlier versions, 2017.011.30070 and earlier versions, 2015.006.30394 and earlier versions. This vulnerability is an instance of a heap overflow vulnerability in the JavaScript engine. The vulnerability is triggered by a PDF file...

CVE-2018-4911

An issue was discovered in Adobe Acrobat Reader 2018.009.20050 and earlier versions, 2017.011.30070 and earlier versions, 2015.006.30394 and earlier versions. This vulnerability is an instance of a use after free vulnerability in the JavaScript API related to bookmark functionality. The...

CVE-2018-4911

An issue was discovered in Adobe Acrobat Reader 2018.009.20050 and earlier versions, 2017.011.30070 and earlier versions, 2015.006.30394 and earlier versions. This vulnerability is an instance of a use after free vulnerability in the JavaScript API related to bookmark functionality. The...

CVE-2018-4890

An issue was discovered in Adobe Acrobat Reader 2018.009.20050 and earlier versions, 2017.011.30070 and earlier versions, 2015.006.30394 and earlier versions. This vulnerability is an instance of a heap overflow vulnerability in the image conversion engine, when handling JPEG data embedded within...

Heap overflow

An issue was discovered in Adobe Acrobat Reader 2018.009.20050 and earlier versions, 2017.011.30070 and earlier versions, 2015.006.30394 and earlier versions. This vulnerability is an instance of a heap overflow vulnerability in the image conversion engine, when handling JPEG data embedded within...

Design/Logic Flaw

An issue was discovered in Adobe Acrobat Reader 2018.009.20050 and earlier versions, 2017.011.30070 and earlier versions, 2015.006.30394 and earlier versions. This vulnerability is an instance of a use after free vulnerability in the JavaScript API related to bookmark functionality. The...

CVE-2018-4890

An issue was discovered in Adobe Acrobat Reader 2018.009.20050 and earlier versions, 2017.011.30070 and earlier versions, 2015.006.30394 and earlier versions. This vulnerability is an instance of a heap overflow vulnerability in the image conversion engine, when handling JPEG data embedded within...

Heap overflow

An issue was discovered in Adobe Acrobat Reader 2018.009.20050 and earlier versions, 2017.011.30070 and earlier versions, 2015.006.30394 and earlier versions. This vulnerability is an instance of a heap overflow vulnerability in the JavaScript engine. The vulnerability is triggered by a PDF file...

CVE-2018-4890

CVE-2018-4890 affects Adobe Acrobat Reader implementations (2018.009.20050 and earlier, 2017.011.30070 and earlier, 2015.006.30394 and earlier). The issue is a heap overflow in the image conversion engine when processing JPEG data embedded in an XPS file. Consequences described include code corru...

CVE-2018-4910: Out-of-bounds Write

An issue was discovered in Adobe Acrobat Reader 2018.009.20050 and earlier versions, 2017.011.30070 and earlier versions, 2015.006.30394 and earlier versions. This vulnerability is an instance of a heap overflow vulnerability in the JavaScript engine. The vulnerability is triggered by a PDF file...

FLARE IDA Pro Script Series: Simplifying Graphs in IDA

Introduction We’re proud to release a new plug-in for IDA Pro users – SimplifyGraph – to help automate creation of groups of nodes in the IDA’s disassembly graph view. Code and binaries are available from the FireEye GitHub repo. Prior to this release we submitted it in the 2017 Hex-Rays plugin...

FLARE IDA Pro Script Series: Simplifying Graphs in IDA

Introduction We’re proud to release a new plug-in for IDA Pro users – SimplifyGraph – to help automate creation of groups of nodes in the IDA’s disassembly graph view. Code and binaries are available from the FireEye GitHub repo. Prior to this release we submitted it in the 2017 Hex-Rays plugin...

CVE-2018-0818

Microsoft ChakraCore allows an attacker to bypass Control Flow Guard CFG in conjunction with another vulnerability to run arbitrary code on a target system, due to how the Chakra scripting engine handles accessing memory, aka "Scripting Engine Security Feature Bypass"...

Security feature bypass

Microsoft ChakraCore allows an attacker to bypass Control Flow Guard CFG in conjunction with another vulnerability to run arbitrary code on a target system, due to how the Chakra scripting engine handles accessing memory, aka "Scripting Engine Security Feature Bypass"...

CVE-2018-0818

Microsoft ChakraCore allows an attacker to bypass Control Flow Guard CFG in conjunction with another vulnerability to run arbitrary code on a target system, due to how the Chakra scripting engine handles accessing memory, aka "Scripting Engine Security Feature Bypass"...

CVE-2018-0818

CVE-2018-0818 is a security feature bypass in Microsoft ChakraCore that enables bypass of Control Flow Guard (CFG) by exploiting how the Chakra scripting engine handles memory. Affected software includes ChakraCore, Microsoft Edge and Internet Explorer, with the CFG bypass potentially enabling co...

Microsoft Edge Chakra JIT BackwardPass::RemoveEmptyLoopAfterMemOp Failed Insert

Microsoft Edge: Chakra: JIT: BackwardPass::RemoveEmptyLoopAfterMemOp doesn't insert branches. CVE-2017-11909 The optimizations for memory operations may leave empty loops as follows: for let i = 0; i arr.length; i++ arri = 0; Becomes: Memsetarr, 0, arr.length; for let i = 0; i arr.length; i++ //...

CVE-2018-0818: Undefined Security Weakness

Microsoft ChakraCore allows an attacker to bypass Control Flow Guard CFG in conjunction with another vulnerability to run arbitrary code on a target system, due to how the Chakra scripting engine handles accessing memory, aka "Scripting Engine Security Feature Bypass"...