CVE-2021-3047

PAN-OS: Weak Cryptography Used in Web Interface Authentication

Description

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. This issue impacts: 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. PAN-OS 10.1 versions are not impacted.

Remediation

Solution:

  • This issue is fixed in PAN-OS 8.1.19, PAN-OS 9.0.14, PAN-OS 9.1.10, PAN-OS 10.0.4, and all later PAN-OS versions.

Workaround:

  • There are no known workarounds for this issue.

Category

4.2
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.28%
Vendor Advisory paloaltonetworks.com
Affected: Palo Alto Networks PAN-OS
Published at:
Updated at:

References

Link Tags
https://security.paloaltonetworks.com/CVE-2021-3047 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-3047?
CVE-2021-3047 has been scored as a medium severity vulnerability.
How to fix CVE-2021-3047?
To fix CVE-2021-3047: This issue is fixed in PAN-OS 8.1.19, PAN-OS 9.0.14, PAN-OS 9.1.10, PAN-OS 10.0.4, and all later PAN-OS versions.
Is CVE-2021-3047 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-3047 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-3047?
CVE-2021-3047 affects Palo Alto Networks PAN-OS.
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