2021-3048 | Palo-Alto PAN-OS devsrvr denial of service
|CVSS Meta Temp Score
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|CTI Interest Score
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A vulnerability has been found in Palo-Alto PAN-OS up to 9.0.13/9.1.8/10.0.4 (Firewall Software) and classified as problematic. Affected by this vulnerability is an unknown functionality of the component devsrvr. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. As an impact it is known to affect availability. The summary by CVE is:
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.
The weakness was presented 08/12/2021. It is possible to read the advisory at security.paloaltonetworks.com. This vulnerability is known as CVE-2021-3048 since 01/06/2021. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn’t need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.
Upgrading to version 9.0.14, 9.1.9, 10.0.5 or 10.1 eliminates this vulnerability.
VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.6
Status: Not defined
0-Day Time: 🔒
Upgrade: PAN-OS 9.0.14/9.1.9/10.0.5/10.1
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