Zero-day vulnerability in Windows

Cross-site scripting
CVE-2011-0096

The vulnerability was originally disclosed on the WooYun website.

Known malware:

exploit:win32/cve-2011-0096 trojan horse.

Vulnerability details

Advisory: SB2011012802 - Information disclosure in MHTML in Microsoft Windows

Vulnerable component: Windows

CVE-ID: CVE-2011-0096

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:H/RL:O/RC:C

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Description:

The vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-input passed via MIME-formatted requests for content blocks within a document. A remote attacker can trick the victim to follow a specially crafted "MHTML:" link and execute arbitrary HTML and script code in userтАЩs browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.


Public Exploits:

- Microsoft Internet Explorer - MHTML Protocol Handler Cross-Site Scripting [Exploit-DB]

External links:

https://technet.microsoft.com/library/security/ms11-026
https://blogs.technet.microsoft.com/srd/2011/01/28/more-information-about-the-mhtml-script-injection...
https://blogs.technet.microsoft.com/msrc/2011/01/28/microsoft-releases-security-advisory-2501696/
http://blog.qisupport.com/exploitwin32cve-2011-0096-trojan-virus-how-to-remove/
https://www.removemalwaretip.com/windows-8/clear-exploitwin32cve-2011-0096-trojan-from-your-windows-...
http://www.malwareremoval.com/forum/viewtopic.php?f=11&t=62646
https://blog.qualys.com/laws-of-vulnerabilities/2011/01/27/microsoft-advisory-on-client-side-xss-250...
https://blogs.forcepoint.com/security-labs/month-threat-webscape-march-2011

About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.