Description
Extremely large RSA keys in certificate chains can cause a client/server to expend significant CPU time verifying signatures. With fix, the size of RSA keys transmitted during handshakes is restricted to <= 8192 bits. Based on a survey of publicly trusted RSA keys, there are currently only three certificates in circulation with keys larger than this, and all three appear to be test certificates that are not actively deployed. It is possible there are larger keys in use in private PKIs, but we target the web PKI, so causing breakage here in the interests of increasing the default safety of users of crypto/tls seems reasonable.
Published: 2023-08-02
Score: 5.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
EUVD EUVD EUVD-2023-32978 Extremely large RSA keys in certificate chains can cause a client/server to expend significant CPU time verifying signatures. With fix, the size of RSA keys transmitted during handshakes is restricted to <= 8192 bits. Based on a survey of publicly trusted RSA keys, there are currently only three certificates in circulation with keys larger than this, and all three appear to be test certificates that are not actively deployed. It is possible there are larger keys in use in private PKIs, but we target the web PKI, so causing breakage here in the interests of increasing the default safety of users of crypto/tls seems reasonable.
History

Tue, 17 Jun 2025 16:00:00 +0000

Type Values Removed Values Added
First Time appeared Redhat stf
CPEs cpe:/a:redhat:service_telemetry_framework:1.5::el8 cpe:/a:redhat:stf:1.5::el8
Vendors & Products Redhat service Telemetry Framework
Redhat stf

Tue, 22 Oct 2024 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sun, 08 Sep 2024 18:45:00 +0000

Type Values Removed Values Added
First Time appeared Redhat openshift Distributed Tracing
CPEs cpe:/a:redhat:openshift_distributed_tracing:2.9::el8
Vendors & Products Redhat openshift Distributed Tracing

Mon, 19 Aug 2024 22:30:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift_distributed_tracing:2.9::el8
Vendors & Products Redhat openshift Distributed Tracing

Subscriptions

Golang Go
Redhat Ansible Automation Platform Cert Manager Cryostat Enterprise Linux Logging Migration Toolkit Applications Migration Toolkit Virtualization Network Observ Optr Openshift Openshift Api Data Protection Openshift Data Foundation Openshift Distributed Tracing Openshift Secondary Scheduler Openshift Serverless Openstack Rhmt Run Once Duration Override Operator Serverless Stf
cve-icon MITRE

Status: PUBLISHED

Assigner: Go

Published:

Updated: 2025-02-13T16:49:16.368Z

Reserved: 2023-04-05T19:36:35.043Z

Link: CVE-2023-29409

cve-icon Vulnrichment

Updated: 2024-08-02T14:07:46.160Z

cve-icon NVD

Status : Modified

Published: 2023-08-02T20:15:11.940

Modified: 2024-11-21T07:57:00.287

Link: CVE-2023-29409

cve-icon Redhat

Severity : Moderate

Publid Date: 2023-08-02T00:00:00Z

Links: CVE-2023-29409 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses