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Vulnerability Details :

CVE-2023-40012

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-09 Aug, 2023 | 15:33
Updated At-03 Oct, 2024 | 15:15
Rejected At-
Credits

uthenticode EKU validation bypass

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:09 Aug, 2023 | 15:33
Updated At:03 Oct, 2024 | 15:15
Rejected At:
▼CVE Numbering Authority (CNA)
uthenticode EKU validation bypass

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.

Affected Products
Vendor
trailofbits
Product
uthenticode
Versions
Affected
  • < 2.0.0
Problem Types
TypeCWE IDDescription
CWECWE-325CWE-325: Missing Cryptographic Step
CWECWE-347CWE-347: Improper Verification of Cryptographic Signature
Type: CWE
CWE ID: CWE-325
Description: CWE-325: Missing Cryptographic Step
Type: CWE
CWE ID: CWE-347
Description: CWE-347: Improper Verification of Cryptographic Signature
Metrics
VersionBase scoreBase severityVector
3.15.9MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Version: 3.1
Base score: 5.9
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/trailofbits/uthenticode/security/advisories/GHSA-gm2f-j4rj-6xqj
x_refsource_CONFIRM
https://github.com/trailofbits/uthenticode/pull/78
x_refsource_MISC
https://github.com/trailofbits/uthenticode/commit/caeb1eb62412605f71bd96ce9bb9420644b6db53
x_refsource_MISC
Hyperlink: https://github.com/trailofbits/uthenticode/security/advisories/GHSA-gm2f-j4rj-6xqj
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/trailofbits/uthenticode/pull/78
Resource:
x_refsource_MISC
Hyperlink: https://github.com/trailofbits/uthenticode/commit/caeb1eb62412605f71bd96ce9bb9420644b6db53
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
1. CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/trailofbits/uthenticode/security/advisories/GHSA-gm2f-j4rj-6xqj
x_refsource_CONFIRM
x_transferred
https://github.com/trailofbits/uthenticode/pull/78
x_refsource_MISC
x_transferred
https://github.com/trailofbits/uthenticode/commit/caeb1eb62412605f71bd96ce9bb9420644b6db53
x_refsource_MISC
x_transferred
Hyperlink: https://github.com/trailofbits/uthenticode/security/advisories/GHSA-gm2f-j4rj-6xqj
Resource:
x_refsource_CONFIRM
x_transferred
Hyperlink: https://github.com/trailofbits/uthenticode/pull/78
Resource:
x_refsource_MISC
x_transferred
Hyperlink: https://github.com/trailofbits/uthenticode/commit/caeb1eb62412605f71bd96ce9bb9420644b6db53
Resource:
x_refsource_MISC
x_transferred
2. CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:09 Aug, 2023 | 16:15
Updated At:16 Aug, 2023 | 17:40

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Secondary3.15.9MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Type: Primary
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Type: Secondary
Version: 3.1
Base score: 5.9
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
CPE Matches

trailofbits
trailofbits
>>uthenticode>>Versions before 2.0.0(exclusive)
cpe:2.3:a:trailofbits:uthenticode:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-325Primarysecurity-advisories@github.com
CWE-347Primarysecurity-advisories@github.com
CWE ID: CWE-325
Type: Primary
Source: security-advisories@github.com
CWE ID: CWE-347
Type: Primary
Source: security-advisories@github.com
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://github.com/trailofbits/uthenticode/commit/caeb1eb62412605f71bd96ce9bb9420644b6db53security-advisories@github.com
Patch
https://github.com/trailofbits/uthenticode/pull/78security-advisories@github.com
Patch
https://github.com/trailofbits/uthenticode/security/advisories/GHSA-gm2f-j4rj-6xqjsecurity-advisories@github.com
Vendor Advisory
Hyperlink: https://github.com/trailofbits/uthenticode/commit/caeb1eb62412605f71bd96ce9bb9420644b6db53
Source: security-advisories@github.com
Resource:
Patch
Hyperlink: https://github.com/trailofbits/uthenticode/pull/78
Source: security-advisories@github.com
Resource:
Patch
Hyperlink: https://github.com/trailofbits/uthenticode/security/advisories/GHSA-gm2f-j4rj-6xqj
Source: security-advisories@github.com
Resource:
Vendor Advisory

Change History

0
Information is not available yet

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