Microsoft Windows Authenticode WinVerifyTrust signature verification

CVSS Meta Temp Score
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CTI Interest Score
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8.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Windows. It has been rated as critical. This impacts the function WinVerifyTrust of the component Authenticode. The manipulation leads to input validation. This vulnerability is listed as CVE-2013-3900. In addition, an exploit is available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in Microsoft Windows (Operating System) (version unknown) and classified as very critical. This issue affects the function WinVerifyTrust of the component Authenticode. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-347. The product does not verify, or incorrectly verifies, the cryptographic signature for data. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Why is Microsoft republishing a CVE from 2013? We are republishing CVE-2013-3900 in the Security Update Guide to update the Security Updates table and to inform customers that the EnableCertPaddingCheck is available in all currently supported versions of Windows 10 and Windows 11. While the format is different from the original CVE published in 2013, except for clarifications about how to configure the EnableCertPaddingCheck registry value, the information herein remains unchanged from the original text published on December 10, 2013, Microsoft does not plan to enforce the stricter verification behavior as a default functionality on supported releases of Microsoft Windows. This behavior remains available as an opt-in feature via reg key setting, and is available on supported editions of Windows released since December 10, 2013. This includes all currently supported versions of Windows 10 and Windows 11. The supporting code for this reg key was incorporated at the time of release for Windows 10 and Windows 11, so no security update is required; however, the reg key must be set. See the Security Updates table for the list of affected software. Vulnerability Description A remote code execution vulnerability exists in the way that the WinVerifyTrust function handles Windows Authenticode signature verification for portable executable (PE) files. An anonymous attacker could exploit the vulnerability by modifying an existing signed executable file to leverage unverified portions of the file in such a way as to add malicious code to the file without invalidating the signature. An attacker who successfully exploited this vulnerability could take complete control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. If a user is logged on with administrative user rights, an attacker who successfully exploited this vulnerability could take complete control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. Exploitation of this vulnerability requires that a user or application run or install a specially crafted, signed PE file. An attacker could modify an... See more at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2013-3900

The weakness was presented 12/10/2013 as MS13-098 as confirmed bulletin (Technet). It is possible to read the advisory at technet.microsoft.com. The identification of this vulnerability is CVE-2013-3900. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a exploit are known. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/22/2026).

It is declared as attacked. The vulnerability scanner Nessus provides a plugin with the ID 71313 (MS13-098: Vulnerability in Windows Could Allow Remote Code Execution (2893294)), 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 90931 (Windows Digital Signatures Remote Code Execution Vulnerability (MS13-098)). The CISA Known Exploited Vulnerabilities Catalog lists this issue since 01/10/2022 with a due date of 07/10/2022:

Apply updates per vendor instructions.

Applying the patch MS13-098 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 13385.

The vulnerability is also documented in the databases at Zero-Day.cz (25), Tenable (71313) and Vulnerability Center (SBV-42505†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.3
VulDB Meta Temp Score: 8.2

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CNA Base Score: 5.5
CNA Vector: 🔍

ADP CISA Base Score: 8.8
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: Signature verification
CWE: CWE-347 / CWE-345
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Attacked

EPSS Score: 🔍
EPSS Percentile: 🔍

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KEV Remediation: 🔍
KEV Ransomware: 🔍
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Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 71313
Nessus Name: MS13-098: Vulnerability in Windows Could Allow Remote Code Execution (2893294)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 903228
OpenVAS Name: Microsoft WinVerifyTrust Signature Validation Vulnerability (2893294)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Zero-Day.cz: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: MS13-098
TippingPoint: 🔍

McAfee IPS Version: 🔍

ISS Proventia IPS: 🔍
PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

06/03/2013 🔍
12/10/2013 +190 days 🔍
12/10/2013 +0 days 🔍
12/10/2013 +0 days 🔍
12/11/2013 +1 days 🔍
12/11/2013 +0 days 🔍
03/24/2015 +468 days 🔍
04/22/2026 +4047 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS13-098
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2013-3900 (🔍)
GCVE (CVE): GCVE-0-2013-3900
GCVE (VulDB): GCVE-100-65723

OVAL: 🔍
IAVM: 🔍

SecurityFocus: 64079
Vulnerability Center: 42505 - [MS13-098] Microsoft Windows Remote Arbitrary Code Execution via a Maliciously Crafted PE File, Critical

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

Entryinfo

Created: 03/24/2015 15:54
Updated: 04/22/2026 14:58
Changes: 03/24/2015 15:54 (74), 05/17/2017 08:32 (2), 01/11/2022 15:12 (3), 01/11/2022 15:18 (2), 04/22/2024 11:37 (26), 07/13/2024 16:18 (2), 09/09/2024 22:29 (1), 11/15/2024 00:57 (12), 11/15/2024 17:37 (12), 12/25/2024 21:59 (2), 01/02/2025 20:33 (5), 04/22/2026 14:58 (12)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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