PAN-OS: Invalid URLs in an External Dynamic List (EDL) can Lead to Firewall Outage
CVE-2021-3048

5.9MEDIUM

Key Information:

Vendor

Palo Alto Networks
Status
Pan-os
Vendor
CVE Published:
11 August 2021

What is 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. This issue impacts: PAN-OS 9.0 versions earlier than PAN-OS 9.0.14; PAN-OS 9.1 versions earlier than PAN-OS 9.1.9; PAN-OS 10.0 versions earlier than PAN-OS 10.0.5. PAN-OS 8.1 and PAN-OS 10.1 versions are not impacted.

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Affected Version(s)

PAN-OS 9.0 < 9.0.14

PAN-OS 9.1 < 9.1.9

PAN-OS 10.0 < 10.0.5

References

https://security.paloaltonetworks.com/CVE-2020-3048
x_refsource_MISC

CVSS V3.1

Score:
5.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

This issue was encountered by some customers of Palo Alto Networks during regular operation.
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