[<prev] [next>] [day] [month] [year] [list]
Message-ID: <aaciUg8U0AQw90Iv@netmeister.org>
Date: Tue, 3 Mar 2026 13:02:58 -0500
From: Jan Schaumann <jschauma@...meister.org>
To: oss-security@...ts.openwall.com
Subject: Issue with AWS-LC: an open-source, general-purpose cryptographic
library (CVE-2026-3336, CVE-2026-3337, CVE-2026-3338)
Via AWS Security Bulletin
https://github.com/aws/aws-lc
----- Forwarded message from "Latest Bulletins: Amazon Web Services" <aws@...zon.com> -----
> Date: Tue, 03 Mar 2026 09:30:01 -0000
> From: "Latest Bulletins: Amazon Web Services" <aws@...zon.com>
> To: jschauma@...meister.org
> Subject: Issue with AWS-LC: an open-source, general-purpose cryptographic
> library (CVE-2026-3336, CVE-2026-3337, CVE-2026-3338)
>
> **Bulletin ID:** 2026-005-AWS
> **Scope:** AWS
> **Content Type:** Important (requires attention)
> **Publication Date:** 2026/03/02 14:30 PM PST
>
> **Description:**
>
> AWS-LC is an open-source, general-purpose cryptographic library. We identified
> three distinct issues:
>
> \- CVE-2026-3336: PKCS7_verify Certificate Chain Validation Bypass in AWS-LC
> Improper certificate validation in PKCS7_verify() in AWS-LC allows an
> unauthenticated user to bypass certificate chain verification when processing
> PKCS7 objects with multiple signers, except the final signer.
> \- CVE-2026-3337: Timing Side-Channel in AES-CCM Tag Verification in AWS-LC
> Observable timing discrepancy in AES-CCM decryption in AWS-LC allows an
> unauthenticated user to potentially determine authentication tag validity via
> timing analysis.
> \- CVE-2026-3338: PKCS7_verify Signature Validation bypass in AWS-LC
> Improper signature validation in PKCS7_verify() in AWS-LC allows an
> unauthenticated user to bypass signature verification when processing PKCS7
> objects with Authenticated Attributes.
>
> **Impacted versions:**
>
> \- PKCS7_verify Certificate Chain Validation Bypass in AWS-LC >= v1.41.0, <
> v1.69.0
> \- PKCS7_verify Certificate Chain Validation Bypass in aws-lc-sys >= v0.24.0,
> < v0.38.0
> \- Timing Side-Channel in AES-CCM Tag Verification in AWS-LC >= v1.21.0, <
> v1.69.0
> \- Timing Side-Channel in AES-CCM Tag Verification in AWS-LC >= AWS-LC-
> FIPS-3.0.0, < AWS-LC-FIPS-3.2.0
> \- Timing Side-Channel in AES-CCM Tag Verification in aws-lc-sys >= v0.14.0, <
> v0.38.0
> \- Timing Side-Channel in AES-CCM Tag Verification in aws-lc-sys-fips >=
> v0.13.0, < v0.13.12
> \- PKCS7_verify Signature Validation bypass in AWS-LC >= v1.41.0, < v1.69.0
> \- PKCS7_verify Signature Validation bypass in aws-lc-sys >= v0.24.0, <
> v0.38.0
>
> **Please refer to the article below for the most up-to-date and complete
> information related to this AWS Security Bulletin.**
>
>
>
> URL: https://aws.amazon.com/security/security-bulletins/rss/2026-005-aws/
----- End forwarded message -----
Powered by blists - more mailing lists
Please check out the
Open Source Software Security Wiki, which is counterpart to this
mailing list.
Confused about mailing lists and their use?
Read about mailing lists on Wikipedia
and check out these
guidelines on proper formatting of your messages.
