Windows Scripting Engine Memory Corruption Vulnerability

An information disclosure vulnerability exists when VBScript improperly discloses the contents of its memory, which could provide an attacker with information to further compromise the user’s computer or data. To exploit the vulnerability, an attacker must know the memory address of where the...

KB4074587: Windows 7 and Windows Server 2008 R2 February 2018 Security Update

The remote Windows host is missing security update 4074587 or cumulative update 4074598. It is, therefore, affected by multiple vulnerabilities : - A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer. The vulnerability...

Targeted Attacks In The Middle East

This blog post is authored by Paul Rascagneres with assistance of Martin Lee. Executive Summary Talos has identified a targeted attacks affecting the Middle East. This campaign contains the following elements, which are described in detail in this article. The use of allegedly confidential decoy...

Microsoft Windows VBScript Filter Function Use-After-Free Information Disclosure Vulnerability

This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Microsoft Windows. 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...

Threat Analysis: Malicious Microsoft Word Documents Being Used in Targeted Attack Campaigns

A Microsoft Word document .doc believed to be malicious was recently submitted to Carbon Black’s Threat Analysis Unit TAU. The submitting organization did not feel that that document and subsequent payload was fully executing in their analysis environment, and questioned whether or not it was...

Microsoft Internet Explorer Scripting Engine Memory Corruption (CVE-2017-11886)

A remote code execution vulnerability exists in Microsoft Explorer. The vulnerability is in the way that Microsoft browser VBScript engines render content when handling objects in memory. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the...

Microsoft Windows VBScript VT_BSTR Use-After-Free Information Disclosure Vulnerability

This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Microsoft Windows. 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...

Microsoft Windows VBScript VT_BSTR Use-After-Free Information Disclosure Vulnerability

This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Microsoft Windows. 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...

Microsoft Windows VBScript Join Function Use-After-Free Information Disclosure Vulnerability

This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Microsoft Windows. 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...

World's Biggest Botnet Just Sent 12.5 Million Emails With Scarab Ransomware

A massive malicious email campaign that stems from the world's largest spam botnet Necurs is spreading a new strain of ransomware at the rate of over 2 million emails per hour and hitting computers across the globe. The popular malspam botnet Necrus which has previously found distributing Dridex...

Microsoft Windows VBScript Join Function Integer Overflow Remote Code Execution Vulnerability

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Windows. 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...

GHSA-CFJH-P3G4-3Q2F VBScript Content Injection in marked

Versions 0.3.2 and earlier of marked are affected by a cross-site scripting vulnerability even when sanitize:true is set. Proof of Concept IE10 Compatibility Mode Only xss link will get a link xss link Recommendation Update to version 0.3.3 or later...

VBScript Content Injection in marked

Versions 0.3.2 and earlier of marked are affected by a cross-site scripting vulnerability even when sanitize:true is set. Proof of Concept IE10 Compatibility Mode Only xss link will get a link xss link Recommendation Update to version 0.3.3 or later...

CVE-2017-13779

GSTNofflinetool in India Goods and Services Tax Network GSTN Offline Utility tool before 1.2 executes winstart-server.vbs from the "C:\GST Offline Tool" directory, which has insecure permissions. This allows local users to gain privileges by replacing winstart-server.vbs with arbitrary VBScript...

Command injection

GSTNofflinetool in India Goods and Services Tax Network GSTN Offline Utility tool before 1.2 executes winstart-server.vbs from the "C:\GST Offline Tool" directory, which has insecure permissions. This allows local users to gain privileges by replacing winstart-server.vbs with arbitrary VBScript...

CVE-2017-13779

GSTNofflinetool in India Goods and Services Tax Network GSTN Offline Utility tool before 1.2 executes winstart-server.vbs from the "C:\GST Offline Tool" directory, which has insecure permissions. This allows local users to gain privileges by replacing winstart-server.vbs with arbitrary VBScript...

CVE-2017-13779: Incorrect Permission Assignment for Critical Resource

GSTNofflinetool in India Goods and Services Tax Network GSTN Offline Utility tool before 1.2 executes winstart-server.vbs from the "C:\GST Offline Tool" directory, which has insecure permissions. This allows local users to gain privileges by replacing winstart-server.vbs with arbitrary VBScript...

Koadic - COM Command & Control Framework (JScript RAT)

Koadic, or COM Command & Control, is a Windows post-exploitation rootkit similar to other penetration testing tools such as Meterpreter and Powershell Empire. The major difference is that Koadic does most of its operations using Windows Script Host a.k.a. JScript/VBScript, with compatibility in t...

Microsoft Internet Explorer Remote Code Execution Vulnerability(CVE-2017-8618)

There is a type confusion issue related to how some arithmetic operations are performed in VBScript. To illustrate, see the following simplified code of VbsVarMod static unsigned char resultlookuptable1818 = ... void VbsVarModVAR v1, VAR v2 VAR arithv1 = v1-PvarGetArithVal; VAR arithv2 =...

Koadic: An Advanced Windows JScript/VBScript RAT!

PenTestIT RSS Feed All of us know that post-exploitation we need some mechanism to maintain access on the target. One of the most common methods is by installing a trojan. I have tried to maintain a list of similar tools on the malware sources page on this blog. Now, there is a new entrant which...