CVE-2020-2033

GlobalProtect App: Missing certificate validation vulnerability can disclose pre-logon authentication cookie

Description

When the pre-logon feature is enabled, a missing certification validation in Palo Alto Networks GlobalProtect app can disclose the pre-logon authentication cookie to a man-in-the-middle attacker on the same local area network segment with the ability to manipulate ARP or to conduct ARP spoofing attacks. This allows the attacker to access the GlobalProtect Server as allowed by configured Security rules for the 'pre-login' user. This access may be limited compared to the network access of regular users. This issue affects: GlobalProtect app 5.0 versions earlier than GlobalProtect app 5.0.10 when the prelogon feature is enabled; GlobalProtect app 5.1 versions earlier than GlobalProtect app 5.1.4 when the prelogon feature is enabled.

Remediation

Solution:

  • This issue is fixed in GlobalProtect app 5.0.10, GlobalProtect app 5.1.4, and all later GlobalProtect app versions.

Workaround:

  • The impact of this vulnerability can be mitigated by decreasing the allowed timeout settings for the prelogon feature or disabling the feature in the GlobalProtect gateway.

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.11%
Vendor Advisory paloaltonetworks.com
Affected: Palo Alto Networks GlobalProtect App
Published at:
Updated at:

References

Link Tags
https://security.paloaltonetworks.com/CVE-2020-2033 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-2033?
CVE-2020-2033 has been scored as a medium severity vulnerability.
How to fix CVE-2020-2033?
To fix CVE-2020-2033: This issue is fixed in GlobalProtect app 5.0.10, GlobalProtect app 5.1.4, and all later GlobalProtect app versions.
Is CVE-2020-2033 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-2033 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-2020-2033?
CVE-2020-2033 affects Palo Alto Networks GlobalProtect App.
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