CVE-2020-2050
published 2020-11-12CVE-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…
PriorityP351high8.2CVSS 3.1
AVNACLPRNUINSUCHILAN
EPSS
1.02%
59.1th percentile
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.
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| palo_alto_networks | pan-os | >= 10.0 < 10.0.1 | 10.0.1 |
| palo_alto_networks | pan-os | >= 8.1 < 8.1.17 | 8.1.17 |
| palo_alto_networks | pan-os | >= 9.0 < 9.0.11 | 9.0.11 |
| palo_alto_networks | pan-os | >= 9.1 < 9.1.5 | 9.1.5 |
| paloalto | pan-os | — | — |
| paloaltonetworks | pan-os | >= 10.0.0 < 10.0.1 | 10.0.1 |
| paloaltonetworks | pan-os | >= 8.1.0 < 8.1.17 | 8.1.17 |
| paloaltonetworks | pan-os | >= 9.0.0 < 9.0.11 | 9.0.11 |
| paloaltonetworks | pan-os | >= 9.1.0 < 9.1.5 | 9.1.5 |
CVSS provenance
nvdv3.18.2HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
nvdv2.06.4MEDIUMAV:N/AC:L/Au:N/C:P/I:P/A:N
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
Palo Alto
PAN-OS: Authentication bypass vulnerability in GlobalProtect client certificate verification
vendor_paloalto·2020-11-11·CVSS 8.2
CVE-2020-2050 [HIGH] CWE-285 PAN-OS: Authentication bypass vulnerability in GlobalProtect client certificate verification
PAN-OS: Authentication bypass vulnerability in GlobalProtect client certificate verification
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,
GlobalProtect Large Scale VPN
In configurations where client certificate verification is used in conjunction with other authentic
GHSA
GHSA-cgjw-gjmx-29p4: An authentication bypass vulnerability exists in the GlobalProtect SSL VPN component of Palo Alto Networks PAN-OS software that allows an attacker to
ghsa_unreviewed·2022-05-24
CVE-2020-2050 [HIGH] CWE-287 GHSA-cgjw-gjmx-29p4: An authentication bypass vulnerability exists in the GlobalProtect SSL VPN component of Palo Alto Networks PAN-OS software that allows an attacker to
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
No detection rules found.
No writeups or analysis indexed.
2020-11-12
Published