CVE-2014-1776 on CISA KEV

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 2

01What CISA says about this vulnerability

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…

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

• securitytracker.com — http://securitytracker.com/id?1030154
• www.osvdb.org — http://www.osvdb.org/106311
• docs.microsoft.com — https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-02…
• blogs.technet.com — http://blogs.technet.com/b/srd/archive/2014/04/30/protection-strategies-for-the-…
• secunia.com — http://secunia.com/advisories/57908
• www.signalsec.com — http://www.signalsec.com/cve-2014-1776-ie-0day-analysis/
• www.fireeye.com — http://www.fireeye.com/blog/uncategorized/2014/04/new-zero-day-exploit-targeting…
• www.kb.cert.org — http://www.kb.cert.org/vuls/id/222929
• technet.microsoft.com — https://technet.microsoft.com/library/security/2963983
• www.securityfocus.com — http://www.securityfocus.com/bid/67075

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
n	a / n/a	n/a

06Detection

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