What it is about

Cisco Catalyst SD-WAN ist eine Netzwerklösung, die Software-definierte Wide-Area-Networking-Funktionen (SD-WAN) mit Cisco Catalyst Series Switches kombiniert, um die Netzwerkleistung an verteilten Standorten zu optimieren und zu sichern. Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in Cisco Catalyst SD-WAN Manager ausnutzen, um einen Cross-Site Scripting 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 Cross-Site Scripting Angriff durchzuführen

Am I affected?

Affected according to the BSI:

• Cisco Catalyst SD-WAN Manager <20.12.5.3
• Cisco Catalyst SD-WAN Manager <20.12.6.1
• Cisco Catalyst SD-WAN Manager <20.15.4.2
• Cisco Catalyst SD-WAN Manager <20.18.2.1
• Cisco Catalyst SD-WAN Manager 20.13
• Cisco Catalyst SD-WAN Manager 20.14
• Cisco Catalyst SD-WAN Manager <20.15.5
• Cisco Catalyst SD-WAN Manager 20.16

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

What helps?

Update to at least:

• Cisco Catalyst SD-WAN Manager 20.12.5.3
• Cisco Catalyst SD-WAN Manager 20.12.6.1
• Cisco Catalyst SD-WAN Manager 20.15.4.2
• Cisco Catalyst SD-WAN Manager 20.18.2.1
• Cisco Catalyst SD-WAN Manager 20.15.5

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.