Resource Exhaustion Affecting kernel-headers package, versions <0:5.14.0-284.36.1.el9_2


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.12% (48th percentile)

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  • Snyk IDSNYK-RHEL9-KERNELHEADERS-7850476
  • published29 Aug 2024
  • disclosed2 Aug 2023

Introduced: 2 Aug 2023

CVE-2023-29409  (opens in a new tab)
CWE-400  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade RHEL:9 kernel-headers to version 0:5.14.0-284.36.1.el9_2 or higher.
This issue was patched in RHSA-2023:5009.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-headers package and not the kernel-headers package as distributed by RHEL. See How to fix? for RHEL:9 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