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Actively exploited · Published May 24, 2013 · Assigned by mitre

CVE-2013-3660

High 7.8 Exploited

In plain English

A high-severity memory corruption in Win32k from Microsoft. Attackers are actively exploiting it in the wild (listed by CISA on March 28, 2022). The chance it is exploited in the next 30 days is estimated at 39.3% (higher than 99% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit, public proof-of-concept code. Apply updates per vendor instructions.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)39.3%top 1.4% of all CVEs
Exploited in the wildYesCISA KEV since Mar 28, 2022
Attack tooling2Metasploit, Public PoC

CISA guidance

Apply updates per vendor instructions.

Federal agencies must remediate by Apr 18, 2022.

Official 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."

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

Weakness: CWE-119 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References