Bug 2456446 - CVE-2026-28390 389-ds-base: OpenSSL: Denial of Service due to NULL pointer dereference in CMS EnvelopedData processing [fedora-43]
Summary: CVE-2026-28390 389-ds-base: OpenSSL: Denial of Service due to NULL pointer de...
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Fedora
Classification: Fedora
Component: 389-ds-base
Version: 43
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Viktor Ashirov
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["b5e373d5-c5e4-40c1-8c22-a...
Depends On:
Blocks: CVE-2026-28390
TreeView+ depends on / blocked
 
Reported: 2026-04-08 09:37 UTC by Vipul Nair
Modified: 2026-04-08 10:47 UTC (History)
6 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2026-04-08 10:47:37 UTC
Type: ---
Embargoed:
fedora-admin-xmlrpc: mirror+

Attachments (Terms of Use)

Description Vipul Nair 2026-04-08 09:37:39 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Comment 1 Viktor Ashirov 2026-04-08 10:47:37 UTC 
The vulnerability requires calling `CMS_decrypt()` on untrusted input. 389-ds-base uses NSS as the primary crypto library. OpenSSL is used only in limited use cases:
1. pwdchan plugin uses `openssl` Rust crate for PBKDF2 password hashing.
2. lib389 shells out to `openssl` CLI for certificate inspection (x509, req, pkcs12, rehash) - not used for CMS decryption.
OpenSSL CMS API is not used by 389-ds-base at all. Closing as not a bug.
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