CVE-2021-3033 Prisma Cloud Compute: SAML Authentication Bypass Vulnerability in Console

Description

An improper verification of cryptographic signature vulnerability exists in the Palo Alto Networks Prisma Cloud Compute console. This vulnerability enables an attacker to bypass signature validation during SAML authentication by logging in to the Prisma Cloud Compute console as any authorized user.

This issue impacts:

All versions of Prisma Cloud Compute 19.11;

Prisma Cloud Compute 20.04 versions Prisma Cloud Compute 20.04.177 and earlier;

Prisma Cloud Compute 20.09 versions Prisma Cloud Compute 20.09.365 and earlier;

Prisma Cloud Compute 20.12 versions Prisma Cloud Compute 20.12.535 and earlier.

Prisma Cloud Compute SaaS version is not impacted by this vulnerability.

Product Status

Required Configuration for Exposure

This issue impacts only Prisma Cloud Compute configurations that use SAML authentication.

Severity: CRITICAL

CVSSv3.1 Base Score: 9.1 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N)

Exploitation Status

Palo Alto Networks is not aware of any malicious exploitation of this issue.

Weakness Type

CWE-347 Improper Verification of Cryptographic Signature

Solution

This issue is fixed in Prisma Cloud Compute 20.04.183, Prisma Cloud Compute 20.09.374, Prisma Cloud Compute 20.12.541, and all later versions.

Workarounds and Mitigations

You can mitigate the impact of this issue by disabling SAML authentication in the Prisma Cloud Compute configuration

Acknowledgments

Timeline