CVE-2026-3338

Improper signature validation in PKCS7_verify() in AWS-LC allows an unauthenticated user to bypass signature verification when processing PKCS7 objects with Authenticated Attributes. Customers of AWS services do not need to take action. Applications using AWS-LC should upgrade to AWS-LC version 1.69.0.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://aws.amazon.com/security/security-bulletins/2026-005-AWS/	Vendor Advisory
https://github.com/aws/aws-lc/releases/tag/v1.69.0	Release Notes
https://github.com/aws/aws-lc/security/advisories/GHSA-jchq-39cv-q4wj	Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:5459
https://access.redhat.com/security/cve/CVE-2026-3338
https://bugzilla.redhat.com/show_bug.cgi?id=2444025
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3338.json

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:amazon:aws-lc-sys::::::rust::*
	cpe:2.3:a:amazon:aws_libcrypto::::::::

History

No history.

Information

Published : 2026-03-02 22:16

Updated : 2026-07-15 02:20

NVD link : CVE-2026-3338

Mitre link : CVE-2026-3338

CVE.ORG link : CVE-2026-3338

JSON object : View

Products Affected

amazon

aws-lc-sys
aws_libcrypto

CWE

CWE-347

Improper Verification of Cryptographic Signature

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Attributes.\n\n\n\nCustomers of AWS services do not need to take action. Applications using AWS-LC should upgrade to AWS-LC version 1.69.0."}, {"lang": "es", "value": "La validaci\u00f3n de firma incorrecta en PKCS7_verify() en AWS-LC permite a un usuario no autenticado eludir la verificaci\u00f3n de firma al procesar objetos PKCS7 con atributos autenticados.\n\nLos clientes de los servicios de AWS no necesitan tomar ninguna medida. Las aplicaciones que utilizan AWS-LC deber\u00edan actualizarse a la versi\u00f3n 1.69.0 de AWS-LC."}], "lastModified": "2026-07-15T02:20:59.787", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:amazon:aws-lc-sys:*:*:*:*:*:rust:*:*", "vulnerable": true, "matchCriteriaId": "1657BD7A-BA4B-430A-809F-DE772460B0EA", "versionEndExcluding": "0.38.0", "versionStartIncluding": "0.24.0"}, {"criteria": "cpe:2.3:a:amazon:aws_libcrypto:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4B6E82AB-2DB6-4350-B218-772CE7852DCC", "versionEndExcluding": "1.69.0", "versionStartIncluding": "1.41.0"}], "operator": "OR"}]}], "sourceIdentifier": "ff89ba41-3aa1-4d27-914a-91399e9639e5"}