CVE-2014-1776

critical-risk
Published 2014-04-27

Use-after-free vulnerability in Microsoft Internet Explorer 6 through 11 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via vectors related to the CMarkup::IsConnectedToPrimaryMarkup function, as exploited in the wild in April 2014. NOTE: this issue originally emphasized VGX.DLL, but Microsoft clarified that "VGX.DLL does not contain the vulnerable code leveraged in this exploit. Disabling VGX.DLL is an exploit-specific workaround that provides an immediate, effective workaround to help block known attacks."

Do I need to act?

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83.3% chance of exploitation in next 30 days
EPSS score — higher than 17% of all CVEs
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CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (6)

Affected Vendors

Microsoft

References (23)

Broken Link http://blogs.technet.com/b/srd/archive/2014/04/30/protection-strategies-for-the-...
Broken Link http://secunia.com/advisories/57908
Broken Link http://securitytracker.com/id?1030154
Broken Link http://www.fireeye.com/blog/uncategorized/2014/04/new-zero-day-exploit-targeting...
Mitigation http://www.kb.cert.org/vuls/id/222929
Broken Link http://www.osvdb.org/106311
Broken Link http://www.securityfocus.com/bid/67075
Exploit http://www.signalsec.com/cve-2014-1776-ie-0day-analysis/
Patch https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-02...
Mitigation https://technet.microsoft.com/library/security/2963983
Broken Link http://blogs.technet.com/b/srd/archive/2014/04/30/protection-strategies-for-the-...
Broken Link http://secunia.com/advisories/57908
Broken Link http://securitytracker.com/id?1030154
Broken Link http://www.fireeye.com/blog/uncategorized/2014/04/new-zero-day-exploit-targeting...
Mitigation http://www.kb.cert.org/vuls/id/222929
Broken Link http://www.osvdb.org/106311
Broken Link http://www.securityfocus.com/bid/67075
Exploit http://www.signalsec.com/cve-2014-1776-ie-0day-analysis/
Patch https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-02...
Mitigation https://technet.microsoft.com/library/security/2963983
and 3 more references
72
/ 100
critical-risk
Severity 32/34 · Critical
Exploitability 27/34 · High
Exposure 13/34 · Low