# CVE-2013-3660

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."

- Page: https://www.vulneraibility.com/cve/CVE-2013-3660
- CVSS: 7.8
- Known exploited: yes, in CISA KEV since 2022-03-28; CISA due date 2022-04-18
- EPSS: 39.32% (percentile 98.6)
- Public exploit code: 3 on Exploit-DB · 1 Metasploit module · 1 GitHub proof of concept (first 2013-05-21)
- CISA SSVC: exploitation active, automatable no, technical impact total (assessed 2025-02-07)
- Weakness: CWE-119
- Published: 2013-05-24

## Affected

- microsoft:windows_7
- microsoft:windows_8
- microsoft:windows_rt
- microsoft:windows_server_2003
- microsoft:windows_server_2008
- microsoft:windows_server_2012
- microsoft:windows_vista
- microsoft:windows_xp

## References

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

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.