Microsoft Windows up to Server 2012 R2 HTTP Request HTTP.sys code injection

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability has been found in Microsoft Windows 7 SP1/8/8.1/Server 2012/Server 2012 R2 and classified as critical. Affected by this vulnerability is an unknown functionality of the file HTTP.sys of the component HTTP Request Handler. This manipulation causes code injection. This vulnerability appears as CVE-2015-1635. The attack may be initiated remotely. In addition, an exploit is available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in Microsoft Windows 7 SP1/8/8.1/Server 2012/Server 2012 R2 (Operating System). It has been declared as critical. Affected by this vulnerability is an unknown part of the file HTTP.sys of the component HTTP Request Handler. The manipulation with an unknown input leads to a code injection vulnerability. The CWE definition for the vulnerability is CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

HTTP.sys in Microsoft Windows 7 SP1, Windows Server 2008 R2 SP1, Windows 8, Windows 8.1, and Windows Server 2012 Gold and R2 allows remote attackers to execute arbitrary code via crafted HTTP requests, aka "HTTP.sys Remote Code Execution Vulnerability."

The weakness was presented 04/14/2015 with Citrix as MS15-034 as confirmed bulletin (Technet). The advisory is shared at technet.microsoft.com. This vulnerability is known as CVE-2015-1635. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known. MITRE ATT&CK project uses the attack technique T1059 for this issue.

It is possible to download the exploit at securityfocus.com. It is declared as attacked. We expect the 0-day to have been worth approximately $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 82771 (MS15-034: Vulnerability in HTTP.sys Could Allow Remote Code Execution (3042553)), 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 91041 (Microsoft Windows HTTP.sys Remote Code Execution Vulnerability (MS15-034)). The CISA Known Exploited Vulnerabilities Catalog lists this issue since 02/10/2022 with a due date of 08/10/2022:

Apply updates per vendor instructions.

Applying the patch MS15-034 is able to eliminate this problem. The bugfix is ready for download at technet.microsoft.com. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 19690.

The vulnerability is also documented in the databases at Tenable (82771), SecurityFocus (BID 74013†), OSVDB (120629†), SecurityTracker (ID 1032109†) and Vulnerability Center (SBV-49597†). See VDB-74834 for similar entry. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

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

ADP CISA Base Score: 9.8
ADP CISA Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Code injection
CWE: CWE-94 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Attacked
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
KEV Notice: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 82771
Nessus Name: MS15-034: Vulnerability in HTTP.sys Could Allow Remote Code Execution (3042553)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: ms15_034_ulonglongadd.rb
MetaSploit Name: MS15-034 HTTP Protocol Stack Request Handling Denial-of-Service
MetaSploit File: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: MS15-034
Suricata ID: 2020912
Suricata Class: 🔍
Suricata Message: 🔍

TippingPoint: 🔍
Fortigate IPS: 🔍

Timelineinfo

02/17/2015 🔍
04/14/2015 +56 days 🔍
04/14/2015 +0 days 🔍
04/14/2015 +0 days 🔍
04/14/2015 +0 days 🔍
04/14/2015 +0 days 🔍
04/14/2015 +0 days 🔍
04/15/2015 +1 days 🔍
04/15/2015 +0 days 🔍
04/22/2026 +4025 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS15-034
Organization: Citrix
Status: Confirmed

CVE: CVE-2015-1635 (🔍)
GCVE (CVE): GCVE-0-2015-1635
GCVE (VulDB): GCVE-100-74833

OVAL: 🔍

SecurityFocus: 74013 - Microsoft Windows HTTP Protocol Stack CVE-2015-1635 Remote Code Execution Vulnerability
OSVDB: 120629
SecurityTracker: 1032109 - Windows HTTP Protocol Stack ('HTTP.sys') Parsing Error Lets Remote Users Execute Arbitrary Code
Vulnerability Center: 49597 - [MS15-034] Microsoft Windows Remote Code Execution via Crafted HTTP Requests - CVE-2015-1635, Critical

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

Entryinfo

Created: 04/15/2015 10:33
Updated: 04/22/2026 21:46
Changes: 04/15/2015 10:33 (50), 05/07/2018 21:50 (3), 05/03/2019 08:08 (30), 05/06/2022 08:42 (2), 05/06/2022 08:43 (7), 05/06/2022 08:45 (1), 04/22/2024 19:10 (23), 09/09/2024 22:29 (1), 11/30/2024 12:10 (2), 01/11/2025 17:07 (1), 01/22/2025 18:55 (1), 04/22/2026 21:46 (11)
Complete: 🔍
Committer: rupag
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

 rupag (+0)
8 years ago
CVSS v2.0 Severity and Metrics:
Base Score: 10.0 HIGH
Vector: (AV:N/AC:L/Au:N/C:C/I:C/A:C) (V2 legend)
Impact Subscore: 10.0
Exploitability Subscore: 10.0

ref: https://nvd.nist.gov/vuln/detail/CVE-2015-1635

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