Improper input validation in Palo Alto Networks Pan-Os
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.008 (56.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Palo Alto Networks Pan-Os — versions 10.1.*, 8.1.*, 9.0
- Paloaltonetworks Pan-Os
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security.paloaltonetworks.com/CVE-2020-3048 (Broken Link)
- security.paloaltonetworks.com/CVE-2021-3048 (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-3048?
- CVE-2021-3048 is a medium-severity vulnerability in Palo Alto Networks Pan-Os, classified under Improper Input Validation. CVSS score: 5.9/10. Published 2021-08-11.
- How severe is CVE-2021-3048?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2021-3048 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.