Zero-day vulnerability in Microsoft Internet Explorer

тАЬUse-after-freeтАЭ error
CVE-2014-1776

The vulnerability uses a heap-spray technique. Used in Pawn Storm campaign.
Used by APT groups.

Vulnerability details

Advisory: SB2014042601 - Remote code execution in Microsoft Internet Explorer

Vulnerable component: Microsoft Internet Explorer

CVE-ID: CVE-2014-1776

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

Known APT campaigns:

Operation Clandestine Fox

The campaign has started in April 2014. The attacker used zero-day vulnerability in Internet Explorer and vectors including social engineering.

External links:

https://technet.microsoft.com/en-US/library/security/2963983
https://technet.microsoft.com/en-us/library/security/ms14-021.aspx
https://www.fireeye.com/blog/threat-research/2014/04/new-zero-day-exploit-targeting-internet-explore...
https://blog.fortinet.com/2014/05/27/a-technical-analysis-of-cve-2014-1776
https://www.symantec.com/connect/blogs/emerging-threat-microsoft-internet-explorer-zero-day-cve-2014...
https://support.norton.com/sp/en/us/home/current/solutions/v98738922_EndUserProfile_en_us
https://www.trustwave.com/Resources/SpiderLabs-Blog/Microsoft-Internet-Explorer-0-Day-(CVE-2014-1776...
https://www.cyphort.com/dig-deeper-ie-vulnerability-cve-2014-1776-exploit/
http://researchcenter.paloaltonetworks.com/2014/05/tale-3-vulnerabilities-cve-2014-1776-exploit-link...
http://blog.trendmicro.com/trendlabs-security-intelligence/internet-explorer-zero-day-hits-all-versi...
https://www.beyondtrust.com/blog/internet-explorer-0day-cve-2014-1776/
http://thehackernews.com/2014/04/new-zero-day-vulnerability-cve-2014.html
https://krebsonsecurity.com/tag/cve-2014-1776/

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.