Zero-day vulnerability in Microsoft Internet Explorer

тАЬUse-after-freeтАЭ error
CVE-2014-1815

CVE-2014-1815 was reported to Microsoft by Clement Lecigne, a security engineer who works for Google in its Swiss office.

The vulnerability was used in the phishing campaign started on or about July 21, 2014 and primarily targeting the energy industry.

Vulnerability details

Advisory: SB2014051302 - Two remote code execution vulnerabilities in Microsoft Internet Explorer

Vulnerable component: Microsoft Internet Explorer

CVE-ID: CVE-2014-1815

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

CWE-ID: CWE-119 - Memory corruption

Description:

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to use-after-free error. A remote attacker can create a specially crafted Web site, trick the victim into visiting it, trigger memory corruption and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability results in arbitrary code execution on the vulnerable system.

Note: the vulnerability was being actively exploited.

Public Exploits:

- Microsoft Internet Explorer - Memory Corruption PoC (MS14-029) [Exploit-DB]

External links:

https://technet.microsoft.com/en-us/library/security/ms14-029
https://www.symantec.com/security_response/writeup.jsp?docid=2014-051503-4437-99
https://www.mysonicwall.com/sonicalert/searchresults.aspx?ev=article&id=721
http://researchcenter.paloaltonetworks.com/2014/07/beginning-end-use-free-exploitation/
http://blog.trendmicro.com/trendlabs-security-intelligence/may-2014-patch-tuesday-rolls-out-8-bullet...
http://www.securityweek.com/microsoft-adobe-patch-critical-security-vulnerabilities

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.