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Files from Ivan Fratric

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First Active2007-03-08
Last Active2017-12-19
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Microsoft Windows jscript!RegExpFncObj::LastParen Out-Of-Bounds Read
Posted Dec 19, 2017
Authored by Ivan Fratric, Google Security Research

There is an out-of-bounds read in jscript.dll library (used in IE, WPAD and other places).

tags | exploit
advisories | CVE-2017-11906
MD5 | 5d6d4de766996a82680340bb4a93c196
Microsoft Windows Array.sort jscript.dll Heap Overflow
Posted Dec 19, 2017
Authored by Ivan Fratric, Google Security Research

There is an heap overflow vulnerability in jscript.dll library (used in IE, WPAD and other places). The bug affects 2 functions, JsArrayStringHeapSort and JsArrayFunctionHeapSort.

tags | exploit, overflow
advisories | CVE-2017-11907
MD5 | 615276599b5ee6f637294ed8b1cf135c
Microsoft Internet Explorer 11 jscript!JSONStringifyObject Use-After-Free
Posted Dec 18, 2017
Authored by Ivan Fratric, Google Security Research

There is a use-after-free in jscript.dll library that can be exploited in IE11.

tags | exploit
advisories | CVE-2017-11793
MD5 | 70d9dab62006eb1aac80ab95307a311b
Windows jscript!NameTbl::GetValDef Use-After-Free
Posted Dec 18, 2017
Authored by Ivan Fratric, Google Security Research

There is a use-after-free vulnerability in jscript.dll. This issue could potentially be exploited through multiple vectors.

tags | exploit
advisories | CVE-2017-11903
MD5 | aec6b9f25c8ebc849fe5b43820ec5473
Microsoft Windows jscript!RegExpComp::Compile Heap Overflow
Posted Dec 18, 2017
Authored by Ivan Fratric, Google Security Research

There is a heap overflow in jscript.dll when compiling a regex. This issue could potentially be exploited through multiple vectors.

tags | exploit, overflow
advisories | CVE-2017-11890
MD5 | 6090424aeefb73a1046a5bb0694554fc
WIndows jscript!JsArraySlice Uninitialized Variable
Posted Dec 18, 2017
Authored by Ivan Fratric, Google Security Research

There is an uninitialized variable vulnerability in jscript.dll. This issue could potentially be exploited through multiple vectors.

tags | exploit
advisories | CVE-2017-11855
MD5 | 07bd43902bf61cc1da46b2ac1db3304c
Chakra CFG Bypass By Overwriting JavaScript Bytecode
Posted Dec 5, 2017
Authored by Ivan Fratric, Google Security Research

Chakra suffers from a CFG bypass by overwriting JavaScript bytecode.

tags | advisory, javascript
MD5 | 9e57eaebd2d21e12b8ff2602894b0871
Chakra CFG Bypass Due To Bug In ServerFreeAllocation
Posted Dec 5, 2017
Authored by Ivan Fratric, Google Security Research

Charka suffers from a CFG bypass due to a bug in ServerFreeAllocation.

tags | advisory
advisories | CVE-2017-11874
MD5 | 6411c53089610f19e5d46f685bd4d1a1
Chakra CFG Bypass With leafInterpreterFrame
Posted Dec 5, 2017
Authored by Ivan Fratric, Google Security Research

Chakra suffers from a CFG bypass with leafInterpreterFrame. Every JavaScript variable in Chakra (except a tagged int) is a pointer. From this pointer, using an arbitrary read, it is possible to follow a chain of pointers and end up with a pointer to the native stack. This allows disclosing the stack location and subsequently overwriting a return address on the stack leading to CFG bypass.

tags | advisory, arbitrary, javascript
MD5 | d1393f9681bc2674203c0bdd4afaea99
WebKit WebCore::FormSubmission::create Use-After-Free
Posted Nov 25, 2017
Authored by Ivan Fratric, Google Security Research

WebKit suffers from a use-after-free vulnerability in WebCore::FormSubmission::create.

tags | exploit
advisories | CVE-2017-13791
MD5 | 98d087c67a0a6cedef693c7155034473
WebKit WebCore::RenderObject::previousSibling Use-After-Free
Posted Nov 25, 2017
Authored by Ivan Fratric, Google Security Research

WebKit suffers from a use-after-free vulnerability in WebCore::RenderObject::previousSibling.

tags | exploit
advisories | CVE-2017-13798
MD5 | 0226ddcb9777ea7067a169d6a553b7c8
WebKit WebCore::DocumentLoader::frameLoader Use-After-Free
Posted Nov 22, 2017
Authored by Ivan Fratric, Google Security Research

WebKit suffers from a use-after-free vulnerability in WebCore::DocumentLoader::frameLoader.

tags | exploit
advisories | CVE-2017-13794
MD5 | c07fda98eca843e82ef5236fd67fb80b
WebKit WebCore::Style::TreeResolver::styleForElement Use-After-Free
Posted Nov 22, 2017
Authored by Ivan Fratric, Google Security Research

WebKit suffers from a use-after-free vulnerability in WebCore::Style::TreeResolver::styleForElement.

tags | exploit
advisories | CVE-2017-13802
MD5 | 63b43c75cbc1b4ad33a88819f4eeddde
WebKit WebCore::SVGPatternElement::collectPatternAttributes Out-Of-Bounds Read
Posted Nov 22, 2017
Authored by Ivan Fratric, Google Security Research

WebKit suffers from an out-of-bounds read in WebCore::SVGPatternElement::collectPatternAttributes.

tags | exploit
advisories | CVE-2017-13783
MD5 | 95cd5b7f1af7b8093b7bf246a111a82c
Webkit WebCore::SimpleLineLayout::RunResolver::runForPoint Out-Of-Bounds Read
Posted Nov 22, 2017
Authored by Ivan Fratric, Google Security Research

WebKit suffers from an out-of-bounds read in WebCore::SimpleLineLayout::RunResolver::runForPoint.

tags | exploit
advisories | CVE-2017-13784
MD5 | ae668f6385f367907250b9be6fb654fb
WebKit WebCore::RenderText::localCaretRect Out-Of-Bounds Read
Posted Nov 22, 2017
Authored by Ivan Fratric, Google Security Research

WebKit suffers from an out-of-bounds read in WebCore::RenderText::localCaretRect.

tags | exploit
advisories | CVE-2017-13785
MD5 | 769ad8e20766a4d8c4e777f522f6d619
WebKit WebCore::AXObjectCache::performDeferredCacheUpdate Use-After-Free
Posted Nov 22, 2017
Authored by Ivan Fratric, Google Security Research

There is a use-after-free security vulnerability in WebCore::AXObjectCache::performDeferredCacheUpdate in WebKit.

tags | advisory
advisories | CVE-2017-13795
MD5 | 7e9512df39aea162da9fecb3f2729c14
WebKit WebCore::PositionIterator::decrement Use-After-Free
Posted Nov 22, 2017
Authored by Ivan Fratric, Google Security Research

There is a use-after-free security vulnerability in WebCore::PositionIterator::decrement in WebKit.

tags | exploit
advisories | CVE-2017-13797
MD5 | 335dfe4b7f9b56e61b37482bb3fcba7e
WebKit WebCore::InputType::element Use-After-Free
Posted Nov 22, 2017
Authored by Ivan Fratric, Google Security Research

There is a use-after-free security vulnerability in WebCore::InputType::element in WebKit.

tags | exploit
advisories | CVE-2017-13792
MD5 | 3bcffec40782a4f0165f5f102cebd11c
WebKit WebCore::TreeScope::documentScope Use-After-Free
Posted Nov 22, 2017
Authored by Ivan Fratric, Google Security Research

There is a use-after-free security vulnerability in WebCore::TreeScope::documentScope in WebKit.

tags | exploit
advisories | CVE-2017-13796
MD5 | abfdfeaf75943ae3005d505a907f9d4a
Microsoft Internet Explorer 11 jscript!JsErrorToString Use-After-Free
Posted Nov 10, 2017
Authored by Ivan Fratric, Google Security Research

Microsoft Internet Explorer 11 suffers from a use-after-free vulnerability in jscript!JsErrorToString.

tags | exploit
advisories | CVE-2017-11810
MD5 | e509659ea4762273ceb30f9caec7db44
Microsoft Edge Partial Page Loading Memory Corruption
Posted Sep 19, 2017
Authored by Ivan Fratric, Google Security Research

There is a security issue in Microsoft Edge related to how HTML documents are loaded. If Edge displays a HTML document from a slow HTTP server, it is possible that a part of the document is going to be rendered before the server has finished sending the document. It is also possible that some JavaScript code is going to trigger. By making DOM modifications before the document had a chance of fully loading, followed by another set of DOM modifications after the page has been loaded, it is possible to trigger memory corruption that could possibly lead to an exploitable condition.

tags | exploit, web, javascript
advisories | CVE-2017-8731
MD5 | 38a51b456f8f99a75032e480ca87fb20
Microsoft Edge COptionsCollectionCacheItem::GetAt Out-Of-Bounds Read
Posted Sep 19, 2017
Authored by Ivan Fratric, Google Security Research

There is an out-of-bounds read issue in Microsoft Edge that could potentially be turned into remote code execution. The vulnerability has been confirmed on Microsoft Edge 38.14393.1066.0 (Microsoft EdgeHTML 14.14393) as well as Microsoft Edge 40.15063.0.0 (Microsoft EdgeHTML 15.15063).

tags | exploit, remote, code execution
advisories | CVE-2017-8734
MD5 | f8f0367a62a7c9dadd43f0e6c52c13e5
Microsoft Edge DuplicateHandle ACG Bypass
Posted Sep 15, 2017
Authored by Ivan Fratric, Google Security Research

ACG (Arbitrary Code Guard) in Microsoft Edge is bypassable. The bypass has been tested on Microsoft Edge 40.15063.0.0 running on Windows 10 Enterprise 64-bit with Creators Update (Version 1703, OS build 15063.413).

tags | exploit, arbitrary
systems | windows
MD5 | e55e370f65b1a357d3ec51c50261ae1c
Microsoft Chakra JIT Server Out-Of-Bounds Write
Posted Aug 16, 2017
Authored by Ivan Fratric, Google Security Research

The Microsoft Chakra JIT server suffers from an out-of-bounds write when processing a Js::OpCode::ProfiledLoopStart opcode.

tags | advisory
advisories | CVE-2017-8659
MD5 | c8362b5a1c7c3dbeb8acb12f5b8d33af
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