Windows: Uninitialized variable in jscript!JsArraySlice(CVE-2017-11855)

There is an uninitialized variable vulnerability in jscript.dll. This issue could potentially be exploited through multiple vectors: - By opening a malicious web page in Internet Explorer. - currently untested An attacker on the local network could exploit this issue by posing as a WPAD Web Proxy...

Windows: Heap overflow in jscript!RegExpComp::Compile through IE or local network via WPAD(CVE-2017-11890)

There is a heap overflow in jscript.dll when compiling a regex. This issue could potentially be exploited through multiple vectors: - An attacker on the local network could exploit this issue by posing as a WPAD Web Proxy Auto-Discovery host and sending a malicious wpad.dat file to the victim. Th...

Project Zero Chains Bugs for ‘aPAColypse Now’ Attack on Windows 10

Google’s Project Zero released details of a local proof-of-concept attack against a fully patched Windows 10 PC that allows an adversary to execute untrusted JavaScript outside a sandboxed environment on targeted systems. The attack is a variation of a WPAD/PAC attack. In Project Zero’s case, the...

Microsoft Windows - jscript!JsArraySlice Uninitialized Variable

Microsoft Windows - jscript!JsArraySlice Uninitialized Variable var x = new URIErrornew Array, undefined, undefined; String.prototype.localeCompare.callx, new Date0, 0, 0, 0, 0, 0, undefined; Array.prototype.slice.call1; !-- ============================================ Technical details: The issu...

Microsoft Windows - jscript!NameTbl::GetValDef Use-After-Free

Microsoft Windows - jscript!NameTbl::GetValDef Use-After-Free var vars = new Array100; forvar i=0;i !-- ============================================ PoC for WPAD might require page heap to trigger the crash: ============================================ function...

Microsoft Windows - jscript!RegExpComp::Compile Heap Overflow Through IE or Local Network via WPAD

Microsoft Windows - jscript!RegExpComp::Compile Heap Overflow Through IE or Local Network via WPAD var s = 'a'; forvar i=0;i...

Microsoft Windows jscript!NameTbl::GetValDef Use-After-Free Exploit

Exploit for windows platform in category dos / poc Windows: use-after-free in jscript!NameTbl::GetValDef CVE-2017-11903 There is a use-after-free vulnerability in jscript.dll. This issue could potentially be exploited through multiple vectors: - An attacker on the local network could exploit this...

Microsoft Windows jscript!JsArraySlice Uninitialized Variable Exploit

Exploit for windows platform in category dos / poc Windows: Uninitialized variable in jscript!JsArraySlice CVE-2017-11855 There is an uninitialized variable vulnerability in jscript.dll. This issue could potentially be exploited through multiple vectors: - By opening a malicious web page in...

Microsoft Windows jscript!RegExpComp::Compile Heap Overflow Exploit

There is a heap overflow in jscript.dll when compiling a regex. This issue could potentially be exploited through multiple vectors. Windows: Heap overflow in jscript!RegExpComp::Compile through IE or local network via WPAD CVE-2017-11890 There is a heap overflow in jscript.dll when compiling a...

Microsoft Windows - jscript!RegExpFncObj::LastParen Out-of-Bounds Read

Microsoft Windows - jscript!RegExpFncObj::LastParen Out-of-Bounds Read function go var r= new RegExpArray100.join''; ''.searchr; alertRegExp.lastParen; go; r rax=0000000000000063 rbx=000000000476fd90 rcx=0000000000000063 rdx=0000000000000064 rsi=000000000476fd90 rdi=000007fef23d37d0...

Microsoft Windows - 'jscript!NameTbl::GetValDef' Use-After-Free

var vars = new Array100; forvar i=0;i !-- ============================================ PoC for WPAD might require page heap to trigger the crash: ============================================ function FindProxyForURLurl, host var vars = new Array100; forv...

Microsoft Windows - 'jscript!JsArraySlice' Uninitialized Variable

var x = new URIErrornew Array, undefined, undefined; String.prototype.localeCompare.callx, new Date0, 0, 0, 0, 0, 0, undefined; Array.prototype.slice.call1; !-- ============================================ Technical details: The issue is in jscript!JsArraySlice Array.prototype.slice.call in the P...

Microsoft Windows - 'jscript!RegExpComp::Compile' Heap Overflow Through IE or Local Network via WPAD

var s = 'a'; forvar i=0;i !-- ============================================ PoC for WPAD: ========================...

Microsoft Windows jscript!RegExpComp::Compile Heap Overflow

Windows: Heap overflow in jscript!RegExpComp::Compile through IE or local network via WPAD CVE-2017-11890 There is a heap overflow in jscript.dll when compiling a regex. This issue could potentially be exploited through multiple vectors: - An attacker on the local network could exploit this issue...

Windows jscript!NameTbl::GetValDef Use-After-Free

Windows: use-after-free in jscript!NameTbl::GetValDef CVE-2017-11903 There is a use-after-free vulnerability in jscript.dll. This issue could potentially be exploited through multiple vectors: - An attacker on the local network could exploit this issue by posing as a WPAD Web Proxy Auto-Discovery...

WIndows jscript!JsArraySlice Uninitialized Variable

Windows: Uninitialized variable in jscript!JsArraySlice CVE-2017-11855 There is an uninitialized variable vulnerability in jscript.dll. This issue could potentially be exploited through multiple vectors: - By opening a malicious web page in Internet Explorer. - currently untested An attacker on t...

aPAColypse now: Exploiting Windows 10 in a Local Network with WPAD/PAC and JScript

by Ivan Fratric, Thomas Dullien, James Forshaw and Steven Vittitoe Intro Many widely-deployed technologies, viewed through 20/20 hindsight, seem like an odd or unnecessarily risky idea. Engineering decisions in IT are often made with imperfect information and under time pressure, and some odditie...

LLMNR NBT-NS MDNS Poisoner: Responder

LLMNR NBT-NS MDNS Poisoner: Responder Responder is a LLMNR, NBT-NS and MDNS poisoner, with built-in HTTP/SMB/MSSQL/FTP/LDAP rogue authentication server supporting NTLMv1/NTLMv2/LMv2, Extended Security NTLMSSP and Basic HTTP authentication. This tool is an LLMNR, NBT-NS and MDNS responder, it will...

Updated kdelibs4 packages fix security vulnerability

Using a malicious PAC file, and then using exfiltration methods in the PAC function FindProxyForURL enables the attacker to expose full https URLs. This is a security issue since https URLs may contain sensitive information in the URL authentication part user:password@host, and in the path and th...

kio: Information Leak when accessing https when using a malicious PAC file

Albert Astals Cid reports: Using a malicious PAC file, and then using exfiltration methods in the PAC function FindProxyForURL enables the attacker to expose full https URLs. This is a security issue since https URLs may contain sensitive information in the URL authentication part...