JITSploitation III: Subverting Control Flow

Posted by Samuel Groß, Project Zero This three-part series highlights the technical challenges involved in finding and exploiting JavaScript engine vulnerabilities in modern web browsers and evaluates current exploit mitigation technologies. The exploited vulnerability, CVE-2020-9802, was fixed i...

PHP 7.4 FFI - 'disable_functions' Bypass

?php / FFI Exploit - uses 3 potential BUGS. PHP was contacted and said nothing in FFI is a security issue. Able to call system$cmd without using FFI::load or FFI::cdefs BUG 1 maybe intended, but why have any size checks then? no bounds check for FFI::String when type is ZENDFFITYPEPOINTER...

CVE-2019-15662

An issue was discovered in Rivet Killer Control Center before 2.1.1352. IOCTL 0x120444 in KfeCo10X64.sys fails to validate an offset passed as a parameter during a memory operation, leading to an arbitrary read primitive that can be used as part of a chain to escalate privileges...

Buffer overflow

An issue was discovered in Rivet Killer Control Center before 2.1.1352. IOCTL 0x120444 in KfeCo10X64.sys fails to validate an offset passed as a parameter during a memory operation, leading to an arbitrary read primitive that can be used as part of a chain to escalate privileges...

CVE-2020-1736

A flaw was found in Ansible Engine when a file is moved using atomicmove primitive as the file mode cannot be specified. This sets the destination files world-readable if the destination file does not exist and if the file exists, the file could be changed to have less restrictive permissions...

iOS/macOS - Out-of-Bounds Timestamp Write in IOAccelCommandQueue2::processSegmentKernelCommand()

While investigating possible shared memory issues in AGXCommandQueue::processSegmentKernelCommand, I noticed that the size checks used to parse the IOAccelKernelCommand in IOAccelCommandQueue2::processSegmentKernelCommand are incorrect. The IOAccelKernelCommand contains an 8-byte header consistin...

iOSmacOS - Out-of-Bounds Timestamp Write in IOAccelCommandQueue2::processSegmentKernelCommand()

iOSmacOS - Out-of-Bounds Timestamp Write in IOAccelCommandQueue2::processSegmentKernelCommand While investigating possible shared memory issues in AGXCommandQueue::processSegmentKernelCommand, I noticed that the size checks used to parse the IOAccelKernelCommand in...

bespoke Cell implementation allows obtaining several mutable references to the same data

The custom implementation of a Cell primitive in the affected versions of this crate does not keep track of mutable references to the underlying data. This allows obtaining several mutable references to the same object which may result in arbitrary memory corruption, most likely use-after-free. T...

Sony Playstation 4 (PS4) 6.72 - WebKit Code Execution (PoC)

Sony Playstation 4 PS4 6.72 - WebKit Code Execution PoC / badhoist ============ Exploit implementation of CVE-2018-4386. Obtains addrof/fakeobj and arbitrary read/write primitives. Supports PS4 consoles on 6.XX. May also work on older firmware versions, but I am not sure. Bug was fixed in firmwar...

CVE-2019-19197

IOCTL Handling in the kyrld.sys driver in Kyrol Internet Security 9.0.6.9 allows an attacker to achieve privilege escalation, denial-of-service, and code execution via usermode because 0x9C402401 using METHODNEITHER results in a read primitive...

CVE-2019-19197

IOCTL Handling in the kyrld.sys driver in Kyrol Internet Security 9.0.6.9 allows an attacker to achieve privilege escalation, denial-of-service, and code execution via usermode because 0x9C402401 using METHODNEITHER results in a read primitive...

CVE-2019-19197

CVE-2019-19197 relates to IOCTL handling in the kyrld.sys driver of Kyrol Internet Security 9.0.6.9. The vulnerability arises when 0x9C402401 is issued via METHOD_NEITHER, leading to a read primitive that enables local privilege escalation, denial of service, and potential code execution in userm...

Remote Code Execution

Microsoft Chakra Core is vulnerable to remote code execution RCE. The vulnerability exists because it does not handle the case where the length isn't a TaggedInt during ToInt32 conversion on non-primitive length...

Trashing the Flow of Data

Posted by Stephen Röttger In this blog post I want to present crbug.com/944062, a vulnerability in Chrome’s JavaScript compiler TurboFan that was discovered independently by Samuel saelo@ via fuzzing with fuzzilli, and by myself via manual code auditing. The bug was found in beta and was fixed...

A Go implementation of Poly1305 that makes sense

Poly1305 is a Message Authentication Code--a cryptographic primitive for authenticating a message with a shared secret key, like HMAC. Although its really a fraction of the complexity of e.g. elliptic curves, most of the implementations Ive read look decidedly like magic, mysteriously multiplying...

PT-2019-17971 · Unknown +1 · Libiec61850 +1

Name of the Vulnerable Software and Affected Versions: libIEC61850 version 1.3.1 Description: A memory leak issue has been identified. The Memory malloc function in hal/memory/lib memory.c leaks memory when called from Asn1PrimitiveValue create in mms/asn1/asn1 ber primitive value.c. This issue i...

DEBIAN-CVE-2018-16510

An issue was discovered in Artifex Ghostscript before 9.24. Incorrect exec stack handling in the "CS" and "SC" PDF primitives could be used by remote attackers able to supply crafted PDFs to crash the interpreter or possibly have unspecified other impact...

Important: kernel

Issue Overview: An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of Load & Store instructions a commonly used performance optimization. It relies on the presence of a precisely-defined instruction sequence in the privileged code...

CVE-2018-1120

A flaw was found affecting the Linux kernel before version 4.17. By mmaping a FUSE-backed file onto a process's memory containing command line arguments or environment strings, an attacker can cause utilities from psutils or procps such as ps, w or any other program which makes a read call to the...

MS17-010 EternalRomance / EternalSynergy / EternalChampion SMB Remote Windows Code Execution

This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework Windows XP systems that are not part of a domain default to treating all network logons as if they were Guest. This prevents SMB relay attacks from gaining administrativ...