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Rewterz Threat Advisory –Multiple Palo Alto Security Vulnerabilities

Severity

High

Analysis Summary

CVE-2021-3047

A cryptographically weak pseudo-random number generator (PRNG) is used during authentication to the Palo Alto Networks PAN-OS web interface. This enables an authenticated attacker, with the capability to observe their own authentication secrets over a long duration on the PAN-OS appliance, to impersonate another authenticated web interface administrator’s session.

CVE-2021-3045

An OS command argument injection vulnerability in the Palo Alto Networks PAN-OS web interface enables an authenticated administrator to read any arbitrary file from the file system.

CVE-2021-3048

Certain invalid URL entries contained in an External Dynamic List (EDL) cause the Device Server daemon (devsrvr) to stop responding. This condition causes subsequent commits on the firewall to fail and prevents administrators from performing commits and configuration changes even though the firewall remains otherwise functional. If the firewall then restarts, it results in a denial-of-service (DoS) condition and the firewall stops processing traffic.

CVE-2021-3046

An improper authentication vulnerability exists in Palo Alto Networks PAN-OS software that enables a SAML authenticated attacker to impersonate any other user in the GlobalProtect Portal and GlobalProtect Gateway when they are configured to use SAML authentication.

CVE-2021-3050

An OS command injection vulnerability in the Palo Alto Networks PAN-OS web interface enables an authenticated administrator to execute arbitrary OS commands to escalate privileges.

Impact

  • Data Encryption
  • Command Injection
  • Denial of Service
  • Privilege Escalation
  • Unauthorized Access

Affected Vendors

Palo Alto

Affected Products

  • PAN-OS 8.1 versions earlier than PAN-OS 8.1.19
  • PAN-OS 9.0 versions earlier than PAN-OS 9.0.14
  • PAN-OS 9.1 versions earlier than PAN-OS 9.1.10
  • PAN-OS 10.0 versions earlier than PAN-OS 10.0.4

Remediation

Refer to vendor advisory for the complete list of affected products and their respective patches.

https://security.paloaltonetworks.com/CVE-2021-3047

https://security.paloaltonetworks.com/CVE-2021-3045

https://security.paloaltonetworks.com/CVE-2021-3048

https://security.paloaltonetworks.com/CVE-2021-3046

https://security.paloaltonetworks.com/CVE-2021-3050