Palo_altoCVELIST:CVE-2020-2050CVE-2020-2050 PAN-OS: Authentication bypass vulnerability in GlobalProtect SSL VPN client certificate verification
8.2 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
8.4 High
AI Score
Confidence
High
0.002 Low
EPSS
Percentile
62.2%
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.
CNA Affected
[
{
"product": "PAN-OS",
"vendor": "Palo Alto Networks",
"versions": [
{
"changes": [
{
"at": "8.1.17",
"status": "unaffected"
}
],
"lessThan": "8.1.17",
"status": "affected",
"version": "8.1",
"versionType": "custom"
},
{
"changes": [
{
"at": "9.0.11",
"status": "unaffected"
}
],
"lessThan": "9.0.11",
"status": "affected",
"version": "9.0",
"versionType": "custom"
},
{
"changes": [
{
"at": "9.1.5",
"status": "unaffected"
}
],
"lessThan": "9.1.5",
"status": "affected",
"version": "9.1",
"versionType": "custom"
},
{
"changes": [
{
"at": "10.0.1",
"status": "unaffected"
}
],
"lessThan": "10.0.1",
"status": "affected",
"version": "10.0",
"versionType": "custom"
}
]
}
]Related
8.2 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
8.4 High
AI Score
Confidence
High
0.002 Low
EPSS
Percentile
62.2%