CVE-2018-12549

In Eclipse OpenJ9 version 0.11.0, the OpenJ9 JIT compiler may incorrectly omit a null check on the receiver object of an Unsafe call when accelerating it...

CVE-2018-12549

CVE-2018-12549 affects Eclipse OpenJ9 VM up to version 0.11.0, where the JIT compiler may omit a null check on the receiver object of an Unsafe call during acceleration. This can enable a remote attacker to execute arbitrary code on the system, as reflected by the CVSS3 base score of 9.8 (high/cr...

(Pwn2Own) Apple Safari RegExp JIT Type Confusion Remote Code Execution Vulnerability

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Apple Safari. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of...

WebKit JSC JIT - GetIndexedPropertyStorage Use-After-Free Exploit

/ The doesGC function simply takes a node, and tells if it might cause a garbage collection. This function is used to determine whether to insert write barriers. But it's missing GetIndexedPropertyStorage that can cause a garbage collection via rope strings. As a result, it can lead to UaF. PoC: ...

Microsoft Edge Chakra JIT NewScObjectNoCtor / InitProto Type Confusion

Microsoft Edge: Chakra: JIT: Type confusion via NewScObjectNoCtor or InitProto CVE-2019-0567 NewScObjectNoCtor and InitProto opcodes are treated as having no side effects, but actually they can have via the SetIsPrototype method of the type handler that can cause transition to a new type. This ca...

Microsoft Edge Chakra JIT Use-After-Free / Flag Issue

Microsoft Edge: Chakra: JIT: JsBuiltInEngineInterfaceExtensionObject::InjectJsBuiltInLibraryCode just clears DisableImplicitFlags CVE-2019-0568 The JsBuiltInEngineInterfaceExtensionObject::InjectJsBuiltInLibraryCode method is used to execute JsBuiltIn.js which initializes some builtin objects...

WebKit JSC JIT - GetIndexedPropertyStorage Use-After-Free

WebKit JSC JIT - GetIndexedPropertyStorage Use-After-Free / The doesGC function simply takes a node, and tells if it might cause a garbage collection. This function is used to determine whether to insert write barriers. But it's missing GetIndexedPropertyStorage that can cause a garbage collectio...

WebKit JSC JIT Use-After-Free

WebKit: JSC: JIT: GetIndexedPropertyStorage can GC CVE-2018-4442 The doesGC function simply takes a node, and tells if it might cause a garbage collection. This function is used to determine whether to insert write barriers. But it's missing some cases such as StringCharAt, StringCharCodeAt and...

WebKit JSC JIT - GetIndexedPropertyStorage Use-After-Free

/ The doesGC function simply takes a node, and tells if it might cause a garbage collection. This function is used to determine whether to insert write barriers. But it's missing GetIndexedPropertyStorage that can cause a garbage collection via rope strings. As a result, it can lead to UaF. PoC: ...

Design/Logic Flaw

Insufficiently strict origin checks during JIT payment app installation in Payments in Google Chrome prior to 70.0.3538.67 allowed a remote attacker to install a service worker for a domain that can host attacker controled files via a crafted HTML page...

Fedora 29 : webkit2gtk3 (2018-1a8582a7ee)

This is a bug fix release in the stable 2.22 series. - CVE-2018-4437 -- Processing maliciously crafted web content may lead to arbitrary code execution. Multiple memory corruption issues were addressed with improved memory handling. - Improved the logic to determine for which architectures to...

Apple WebKit Memory Corruption (CVE-2018-4233)

A remote code execution vulnerability exists in Apple WebKit. The vulnerability is due to a memory corruption when handling of objects in javascript JIT. A remote attacker could exploit the vulnerability by enticing the target user to open a specially crafted js webpage. Successful exploitation...

WebKit JIT - Int32/Double Arrays can have Proxy Objects in the Prototype Chains

didBecomePrototype; if structurevm-hasMonoProto DeferredStructureTransitionWatchpointFire deferredvm, structurevm; Structure newStructure = Structure::changePrototypeTransitionvm, structurevm, prototype, deferred; setStructurevm, newStructure; else putDirectvm, knownPolyProtoOffset, prototype; if...

The evolution of Microsoft Threat Protection, December update

December was another month of significant development for Microsoft Threat Protection capabilities. As a quick recap, Microsoft Threat Protection is an integrated solution securing the modern workplace across identities, endpoints, user data, cloud apps, and infrastructure. Last month, we shared...

Remote Code Execution (RCE)

Microsoft.ChakraCore is vulnerable to remote code execution. This is due to a buffer overflow in the JIT scripting engine which would allow an attacker to execute arbitrary code in the context of the authenticated user. This CVE ID is different from CVE-2018-8583, CVE-2018-8617, CVE-2018-8618,...

WebKit JIT Proxy Object Issue

WebKit: JIT: Int32/Double arrays can have Proxy objects in the prototype chains CVE-2018-4438 Bug: void JSObject::setPrototypeDirectVM& vm, JSValue prototype ASSERTprototype; if prototype.isObject prototype.asCell-didBecomePrototype; if structurevm-hasMonoProto...

Remote Code Execution (RCE)

Microsoft ChakraCore is vulnerable to remote code execution. An unsafe type-casting in the JIT allows a remote attacker to execute arbitrary code in the context of the authenticated user. This CVE ID is different from CVE-2018-0834, CVE-2018-0835, CVE-2018-0836, CVE-2018-0837, CVE-2018-0838,...

Remote Code Execution (RCE)

Microsoft ChakraCore is vulnerable to remote code execution. This is due to a JIT optimization vulnerability which would allow remote attackers to execute arbitrary commands in the context of the authenticated user. This CVE ID is different from CVE-2017-11836, CVE-2017-11837, CVE-2017-11839,...

WebKit JSC JIT - ByteCodeParser::handleIntrinsicCall Type Confusion Exploit

WebKit JIT - ByteCodeParser::handleIntrinsicCall Type Confusion Exploit / case ArrayPushIntrinsic: ... if staticcastargumentCountIncludingThis = MINSPARSEARRAYINDEX return false; ArrayMode arrayMode = getArrayModemcurrentInstructionOPCODELENGTHopcall - 2.u.arrayProfile, Array::Write; ... This cod...

WebKit JIT - 'ByteCodeParser::handleIntrinsicCall' Type Confusion

/ case ArrayPushIntrinsic: ... if staticcastargumentCountIncludingThis = MINSPARSEARRAYINDEX return false; ArrayMode arrayMode = getArrayModemcurrentInstructionOPCODELENGTHopcall - 2.u.arrayProfile, Array::Write; ... This code always assumes that the current instruction is an opcall instruction...