Auth bypass in Palo Alto Networks Pan-Os
CVE-2020-2050
An authentication bypass vulnerability exists in the GlobalProtect SSL VPN component of Palo Alto Networks PAN-OS software that allows an attacker to bypass all client certificate checks with an invalid certificate. A remote attacker can successfully authenticate as any user and gain access to restricted VPN network resources when the gateway or portal is configured to rely entirely on certificate-based authentication. Impacted features that use SSL VPN with client certificate verification are: GlobalProtect Gateway, GlobalProtect Portal, GlobalProtect Clientless VPN In configurations where client certificate verification is used in conjunction with other authentication methods, the protections added by the certificate check are ignored as a result of this issue. This issue impacts: PAN-OS 8.1 versions earlier than PAN-OS 8.1.17; PAN-OS 9.0 versions earlier than PAN-OS 9.0.11; PAN-OS 9.1 versions earlier than PAN-OS 9.1.5; PAN-OS 10.0 versions earlier than PAN-OS 10.0.1.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.010 (62.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 62.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Palo Alto Networks Pan-Os — versions 8.1, 9.0, 9.1
- Paloaltonetworks Pan-Os
Weakness classification (CWE)
References
- security.paloaltonetworks.com/CVE-2020-2050 (Vendor Advisory)
Frequently asked questions
- What is CVE-2020-2050?
- CVE-2020-2050 is a high-severity vulnerability in Palo Alto Networks Pan-Os, classified under Improper Authorization. CVSS score: 8.2/10. Published 2020-11-12.
- How severe is CVE-2020-2050?
- High severity. CVSS v3 base score is 8.2 out of 10.