uthenticode up to 1.x X.509 Certificate certificate validation

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability was found in uthenticode up to 1.x. It has been declared as critical. This affects an unknown function of the component X.509 Certificate Handler. Executing a manipulation can lead to certificate validation. This vulnerability is tracked as CVE-2023-40012. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in uthenticode up to 1.x. It has been declared as critical. This vulnerability affects some unknown processing of the component X.509 Certificate Handler. The manipulation with an unknown input leads to a certificate validation vulnerability. The CWE definition for the vulnerability is CWE-295. The product does not validate, or incorrectly validates, a certificate. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

uthenticode is a small cross-platform library for partially verifying Authenticode digital signatures. Versions of uthenticode prior to the 2.x series did not check Extended Key Usages in certificates, in violation of the Authenticode X.509 certificate profile. As a result, a malicious user could produce a "signed" PE file that uthenticode would verify and consider valid using an X.509 certificate that isn't entitled to produce code signatures (e.g., a SSL certificate). By design, uthenticode does not perform full-chain validation. However, the absence of EKU validation was an unintended oversight. The 2.0.0 release series includes EKU checks. There are no workarounds to this vulnerability.

The weakness was disclosed 08/09/2023 as GHSA-gm2f-j4rj-6xqj. The advisory is available at github.com. This vulnerability was named CVE-2023-40012 since 08/08/2023. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1587.003 by the MITRE ATT&CK project.

Upgrading to version 2.0.0 eliminates this vulnerability. Applying the patch caeb1eb62412605f71bd96ce9bb9420644b6db53 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.1
VulDB Meta Temp Score: 6.1

VulDB Base Score: 5.0
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 5.9
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

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

Exploitinginfo

Class: Certificate validation
CWE: CWE-295 / CWE-287
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: uthenticode 2.0.0
Patch: caeb1eb62412605f71bd96ce9bb9420644b6db53

Timelineinfo

08/08/2023 🔍
08/09/2023 +1 days 🔍
08/09/2023 +0 days 🔍
09/02/2023 +24 days 🔍

Sourcesinfo

Advisory: GHSA-gm2f-j4rj-6xqj
Status: Confirmed

CVE: CVE-2023-40012 (🔍)
GCVE (CVE): GCVE-0-2023-40012
GCVE (VulDB): GCVE-100-236662

Entryinfo

Created: 08/09/2023 20:21
Updated: 09/02/2023 15:36
Changes: 08/09/2023 20:21 (42), 09/02/2023 15:36 (21)
Complete: 🔍
Cache ID: 216::103

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