CVE-2013-3660

unknown KEV

Published 2022-03-28 · Modified 2022-03-28

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

2.5

Description

The EPATHOBJ::pprFlattenRec function in win32k.sys in the kernel-mode drivers in Microsoft does not properly initialize a pointer for the next object in a certain list, which allows local users to gain privileges.

CISA KEV

Vendor: Microsoft
Product: Win32k
Due date: 2022-04-18

Predictions

Exploit likelihood

99%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-25611 dos windows verified

Tavis Ormandy · 2013-05-21

Microsoft Windows - Win32k!EPATHOBJ::pprFlattenRec Uninitialized Next Pointer Testcase

Source code queued for fetch — refresh in a moment.

EDB-26554 local windows verified

Metasploit · 2013-07-02

Microsoft Windows - 'EPATHOBJ::pprFlattenRec' Local Privilege Escalation (Metasploit)

Source code queued for fetch — refresh in a moment.

EDB-25912 local windows verified

Tavis Ormandy · 2013-06-03

Microsoft Windows NT/2000/2003/2008/XP/Vista/7/8 - 'EPATHOBJ' Local Ring

Source code queued for fetch — refresh in a moment.

Metasploit modules

exploit_windows/local/ppr_flatten_rec rank 200

Windows EPATHOBJ::pprFlattenRec Local Privilege Escalation

Source fetch failed: fetch_error — view the original via the link above.

References

https://nvd.nist.gov/vuln/detail/CVE-2013-3660

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.