What it is about

Elasticsearch ist eine Open Source, verteilte Echtzeit-Suche und Analyse-Engine. Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Elasticsearch ausnutzen, um Administratorrechte zu erlangen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren oder Denial-of-Service-Zustände auszulösen.

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

• Administratorrechte zu erlangen
• Sicherheitsmaßnahmen zu umgehen
• Daten zu manipulieren oder Denial-of-Service-Zustände auszulösen

Am I affected?

Affected according to the BSI:

• Microsoft Azure Linux azl3
• Open Source Elasticsearch <9.3.8
• Open Source Elasticsearch <8.19.19
• Open Source Elasticsearch <9.4.4
• Open Source Elasticsearch <8.19.21
• Open Source Elasticsearch <9.4.6
• Open Source Elasticsearch <9.5.2
• Open Source Elasticsearch <9.4.7
• Open Source Elasticsearch <9.5.4
• Open Source Elasticsearch <8.19.22
• Open Source Elasticsearch <9.4.8
• Open Source Elasticsearch <9.5.5

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

What helps?

Update to at least:

• Open Source Elasticsearch 9.3.8
• Open Source Elasticsearch 8.19.19
• Open Source Elasticsearch 9.4.4
• Open Source Elasticsearch 8.19.21
• Open Source Elasticsearch 9.4.6
• Open Source Elasticsearch 9.5.2
• Open Source Elasticsearch 9.4.7
• Open Source Elasticsearch 9.5.4
• Open Source Elasticsearch 8.19.22
• Open Source Elasticsearch 9.4.8
• Open Source Elasticsearch 9.5.5

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.