Resource Exhaustion Affecting openshift-clients-redistributable package, versions <0:4.14.0-202311031050.p0.g9b1e0d2.assembly.stream.el8


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.06% (26th percentile)

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  • Snyk ID SNYK-RHEL8-OPENSHIFTCLIENTSREDISTRIBUTABLE-6063280
  • published 16 Nov 2023
  • disclosed 2 Aug 2023

How to fix?

Upgrade RHEL:8 openshift-clients-redistributable to version 0:4.14.0-202311031050.p0.g9b1e0d2.assembly.stream.el8 or higher.
This issue was patched in RHSA-2023:6840.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openshift-clients-redistributable package and not the openshift-clients-redistributable package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

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.

CVSS Scores

version 3.1
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NVD

5.3 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    Low
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Red Hat

5.3 medium
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SUSE

7.5 high