Threat landscape
medium

Red Hat Enterprise Linux (python-idna): Schwachstelle ermöglicht Denial of Service

WID-SEC-2024-1269 · first 03.06.2024 · updated 10.09.2026 · CVSS 6,5

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What it is about

Red Hat Enterprise Linux (RHEL) ist eine populäre Linux-Distribution. Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in Red Hat Enterprise Linux ausnutzen, um einen Denial of Service Angriff durchzuführen.

Under what conditions?

Over the network, but only with valid access (login required), for example with stolen credentials or as an insider.

What can happen in the worst case

An attacker could use the vulnerability to

  • einen Denial of Service Angriff durchzuführen

Am I affected?

Affected according to the BSI:

  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Fedora Linux
  • SUSE Linux
  • Oracle Linux
  • IBM Storage Scale
  • Splunk Splunk Enterprise <9.2.1
  • Splunk Splunk Enterprise <9.1.4
  • Splunk Splunk Enterprise <9.0.9
  • IBM Storage Scale 5.1.9.5
  • Splunk Splunk Enterprise Add-on for Cisco Meraki <2.2.0
  • IBM QRadar SIEM 7.5.0

and 3 more

The installed version is usually shown under “Help → About” or in the device’s admin interface.

What helps?

Update to at least:

  • Splunk Splunk Enterprise 9.2.1
  • Splunk Splunk Enterprise 9.1.4
  • Splunk Splunk Enterprise 9.0.9
  • Splunk Splunk Enterprise Add-on for Cisco Meraki 2.2.0
  • IBM QRadar SIEM 7.5.0 UP12

Is the vulnerability already being exploited?

None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.

Information and sources

and 1 more sources in the original advisory

CVE: CVE-2024-3651

Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.

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