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Red Hat Single Sign On: Mehrere Schwachstellen

WID-SEC-2022-1947 · first 12.06.2019 · updated 09.10.2026 · CVSS 6,5

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What it is about

Red Hat Single Sign-On ist ein eigenständiger Server, basierend auf dem Keycloak Projekt. Ein Angreifer kann mehrere Schwachstellen in Red Hat Single Sign On ausnutzen, um einen Cross-Site Scripting Angriff durchzuführen, einen Denial of Service Zustand hervorzurufen, Informationen auszuspähen, Sicherheitsvorkehrungen zu umgehen oder beliebigen Programmcode auszuführen.

Under what conditions?

The BSI does not name any particular preconditions. Exploitable remotely according to the BSI.

What can happen in the worst case

An attacker could use the vulnerability to

  • einen Cross-Site Scripting Angriff durchzuführen
  • einen Denial of Service Zustand hervorzurufen
  • Informationen auszuspähen
  • Sicherheitsvorkehrungen zu umgehen oder beliebigen Programmcode auszuführen

Am I affected?

Affected according to the BSI:

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Red Hat Single Sign On 7.3

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

What helps?

Install the updates provided by the vendor; details in the sources below.

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

CVE: CVE-2016-10735, CVE-2018-14041, CVE-2018-20676, CVE-2018-20677, CVE-2019-3872, CVE-2019-3873, CVE-2019-8331, CVE-2019-3888, CVE-2019-3875, CVE-2019-10157, CVE-2019-11358

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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