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    CVE-2023-29409

    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:Aug 2, 2023
    Last Modified:Feb 13, 2025
    EPS:Aug 2, 2023
    EPSS Score:0.00112
    CVSS Score:5.3

    Affected Products

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

    Exploits

    https://github.com/mateusz834/CVE-2023-29409

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High