VDB-65655 · CVE-2013-6999 · BID 64057

Microsoft Windows IsHandleEntrySecure null pointer dereference ⚔ [Disputed]

CVSS Meta Temp Score
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CTI Interest Score
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4.3$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Microsoft Windows. The impacted element is the function IsHandleEntrySecure. Performing a manipulation results in null pointer dereference. This vulnerability is known as CVE-2013-6999. Attacking locally is a requirement. Furthermore, an exploit is available. The existence of this vulnerability is still disputed at present.

Detailsinfo

A vulnerability classified as problematic has been found in Microsoft Windows (Operating System) (affected version not known). This affects the function IsHandleEntrySecure. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. The summary by CVE is:

** DISPUTED ** The IsHandleEntrySecure function in win32k.sys in the kernel-mode drivers in Microsoft Windows Server 2008 SP2 does not properly validate the tagPROCESSINFO pW32Job field, which allows local users to cause a denial of service (NULL pointer dereference and system crash) via a crafted NtUserValidateHandleSecure call for an owned object. NOTE: the vendor reportedly disputes the significance of this report, stating that "it appears to be a local DOS ... we don t consider it a security vulnerability."

The weakness was published 12/06/2013 by sixtyvividtails (Website). It is possible to read the advisory at securityfocus.com. This vulnerability is uniquely identified as CVE-2013-6999 since 12/06/2013. The exploitability is told to be difficult. Attacking locally is a requirement. A authentication is required for exploitation. Technical details and a public exploit are known.

It is declared as proof-of-concept. The real existence of this vulnerability is still doubted at the moment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at SecurityFocus (BID 64057†) and Secunia (SA55633†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.7
VulDB Meta Temp Score: 4.5

VulDB Base Score: 4.7
VulDB Temp Score: 4.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/03/2013 🔍
12/03/2013 +0 days 🔍
12/06/2013 +3 days 🔍
12/06/2013 +0 days 🔍
12/06/2013 +0 days 🔍
03/24/2015 +473 days 🔍
08/06/2024 +3423 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: securityfocus.com⛔
Researcher: sixtyvividtails
Status: Not defined
Disputed: 🔍

CVE: CVE-2013-6999 (🔍)
GCVE (CVE): GCVE-0-2013-6999
GCVE (VulDB): GCVE-100-65655
SecurityFocus: 64057 - Microsoft Windows Kernel 'IsHandleEntrySecure()' Function Local Denial of Service Vulnerability
Secunia: 55633 - Microsoft Windows "IsHandleEntrySecure()" Denial of Service Vulnerability, Not Critical

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/24/2015 15:54
Updated: 08/06/2024 22:54
Changes: 03/24/2015 15:54 (43), 04/07/2017 16:05 (9), 01/11/2022 08:47 (7), 08/06/2024 22:54 (18)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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