Intelligence online17 sources monitored8 actively exploited 7d26 published 24hChecked recently
Vulnerability record

CVE-2013-3660

Microsoft Win32k Privilege Escalation Vulnerability

HighExploitation confirmedCISA KEV
What should I do?

This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run Win32k, fix it now.

CISA required action: Apply updates per vendor instructions.

US federal civilian agencies must remediate by Apr 18, 2022.

Patch status

Official fix available since

Apply the vendor's update to every affected system. Check the fixed-in versions below where known.

Basis: NVD patch reference

Description

The EPATHOBJ::pprFlattenRec function in win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, and Windows Server 2012 does not properly initialize a pointer for the next object in a certain list, which allows local users to obtain write access to the PATHRECORD chain, and consequently gain privileges, by triggering excessive consumption of paged memory and then making many FlattenPath function calls, aka "Win32k Read AV Vulnerability."

Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.

Affected products

ProductVendorSource
Win32kMicrosoftKEV

Sources: KEV = CISA Known Exploited Vulnerabilities catalog. Version details have not been published yet.

Intelligence timeline

Developments from the last 30 days, newest first.

  1. CVSS scoredUpdateKEV

    CVE-2013-3660 scored CVSS 7.8: Microsoft Win32k, Microsoft Win32k Privilege Escalation Vulnerability

    CISA lists this as exploited in the wild. Unpatched Win32k systems are exposed to active attacks now.

    Basis: NIST National Vulnerability Database

  2. Patch releasedUpdateKEV

    Patch released for CVE-2013-3660: Microsoft Win32k, Microsoft Win32k Privilege Escalation Vulnerability

    An official fix is now available for Microsoft Win32k. This vulnerability is being exploited, so apply it promptly.

    Basis: NVD patch reference

1 earlier event is available with a subscription. See plans.

Coverage

We have not published a story about this vulnerability yet.

References

  • nvd.nist.gov https://nvd.nist.gov/vuln/detail/CVE-2013-3660
  • archives.neohapsis.com http://archives.neohapsis.com/archives/fulldisclosure/2013-05/0090.html
  • archives.neohapsis.com http://archives.neohapsis.com/archives/fulldisclosure/2013-05/0094.html
  • archives.neohapsis.com http://archives.neohapsis.com/archives/fulldisclosure/2013-06/0006.html
  • secunia.com http://secunia.com/advisories/53435
  • twitter.com http://twitter.com/taviso/statuses/309157606247768064
  • twitter.com http://twitter.com/taviso/statuses/335557286657400832
  • computerworld.com http://www.computerworld.com/s/article/9239477
  • exploit-db.com http://www.exploit-db.com/exploits/25611/
  • osvdb.org http://www.osvdb.org/93539
  • reddit.com http://www.reddit.com/r/netsec/comments/1eqh66/0day_windows_kernel_epathobj_vulnerability/
  • theverge.com http://www.theverge.com/2013/5/23/4358400/google-engineer-bashes-microsoft-discloses-windows-flaw
  • us-cert.gov http://www.us-cert.gov/ncas/alerts/TA13-190A
  • docs.microsoft.com https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-053
  • oval.cisecurity.org https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A17360
  • cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2013-3660