Bug 2444024 (CVE-2026-3337)

Summary:	CVE-2026-3337 aws-lc: AWS-LC: Information disclosure via timing discrepancy in AES-CCM decryption
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	dbosanac, jreimann, lball, mdessi, mrizzi, ngough, pcattana, veshanka
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in AWS-LC. This vulnerability, a timing discrepancy, allows an unauthenticated attacker to potentially determine the validity of an authentication tag. This information disclosure could be exploited through timing analysis.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2444174, 2444176, 2444180, 2444171, 2444172, 2444173, 2444175, 2444177, 2444178, 2444179
Bug Blocks:

Description OSIDB Bzimport 2026-03-02 22:01:21 UTC

Observable timing discrepancy in AES-CCM decryption in AWS-LC allows an unauthenticated user to potentially determine authentication tag validity via timing analysis.




The impacted implementations are through the EVP CIPHER API: EVP_aes_128_ccm, EVP_aes_192_ccm, and EVP_aes_256_ccm.




Customers of AWS services do not need to take action. Applications using AWS-LC should upgrade to AWS-LC version 1.69.0.