Microsoft Windows DNS use after free

CVSS Meta Temp Score
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CTI Interest Score
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7.0$5k-$25k0.00

Summaryinfo

A vulnerability classified as critical was found in Microsoft Windows Server 2008/Server 2008 R2/Server 2012/Server 2012 R2. The affected element is an unknown function of the component DNS. Executing a manipulation can lead to use after free. This vulnerability is tracked as CVE-2015-6125. The attack can be launched remotely. No exploit exists. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability has been found in Microsoft Windows Server 2008/Server 2008 R2/Server 2012/Server 2012 R2 (Operating System) and classified as critical. This vulnerability affects an unknown function of the component DNS. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Use-after-free vulnerability in the DNS server in Microsoft Windows Server 2008 SP2 and R2 SP1 and Server 2012 Gold and R2 allows remote attackers to execute arbitrary code via crafted requests, aka "Windows DNS Use After Free Vulnerability."

The weakness was disclosed 12/08/2015 with Microsoft as MS15-127 as confirmed bulletin (Technet). The advisory is shared for download at technet.microsoft.com. This vulnerability was named CVE-2015-6125 since 08/14/2015. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 11/18/2024).

The vulnerability scanner Nessus provides a plugin with the ID 87256 (MS15-127: Security Update for Microsoft Windows DNS to Address Remote Code Execution (3100465)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins. The commercial vulnerability scanner Qualys is able to test this issue with plugin 91131 (Microsoft Windows DNS Server Remote Code Execution Vulnerability (MS15-127)).

Applying the patch MS15-127 is able to eliminate this problem. The bugfix is ready for download at technet.microsoft.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (87256), SecurityFocus (BID 78496†) and Vulnerability Center (SBV-54863†). The entries VDB-79493, VDB-79494 and VDB-79495 are pretty similar. Once again VulDB remains the best 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: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 87256
Nessus Name: MS15-127: Security Update for Microsoft Windows DNS to Address Remote Code Execution (3100465)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: MS15-127
McAfee IPS: 🔍
McAfee IPS Version: 🔍

Fortigate IPS: 🔍

Timelineinfo

08/14/2015 🔍
12/08/2015 +116 days 🔍
12/08/2015 +0 days 🔍
12/08/2015 +0 days 🔍
12/08/2015 +0 days 🔍
12/09/2015 +1 days 🔍
12/09/2015 +0 days 🔍
12/09/2015 +0 days 🔍
11/18/2024 +3267 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS15-127
Organization: Microsoft
Status: Confirmed

CVE: CVE-2015-6125 (🔍)
GCVE (CVE): GCVE-0-2015-6125
GCVE (VulDB): GCVE-100-79492
SecurityFocus: 78496 - Microsoft Windows CVE-2015-6125 DNS Use After Free Remote Code Execution Vulnerability
SecurityTracker: 1034323
Vulnerability Center: 54863 - [MS15-127] Microsoft Windows DNS Server Remote Code Execution Vulnerability, High

scip Labs: https://www.scip.ch/en/?labs.20140213
See also: 🔍

Entryinfo

Created: 12/09/2015 12:13
Updated: 11/18/2024 14:31
Changes: 12/09/2015 12:13 (61), 04/07/2017 13:58 (13), 06/29/2022 08:10 (2), 06/29/2022 08:11 (1), 11/18/2024 14:31 (16)
Complete: 🔍
Cache ID: 216::103

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