CVE-2021-3051

Cortex XSOAR: Authentication Bypass in SAML Authentication

Description

An improper verification of cryptographic signature vulnerability exists in Cortex XSOAR SAML authentication that enables an unauthenticated network-based attacker with specific knowledge of the Cortex XSOAR instance to access protected resources and perform unauthorized actions on the Cortex XSOAR server. This issue impacts: Cortex XSOAR 5.5.0 builds earlier than 1578677; Cortex XSOAR 6.0.2 builds earlier than 1576452; Cortex XSOAR 6.1.0 builds earlier than 1578663; Cortex XSOAR 6.2.0 builds earlier than 1578666. All Cortex XSOAR instances hosted by Palo Alto Networks are protected from this vulnerability; no additional action is required for these instances.

Remediation

Solution:

  • This issue is fixed in Cortex XSOAR 5.5.0 build 1578677, Cortex XSOAR 6.0.2 build 1576452, Cortex XSOAR 6.1.0 build 1578663, Cortex XSOAR 6.2.0 build 1578666, and all later Cortex XSOAR versions.

Workaround:

  • To completely prevent this issue from being exploited before you can upgrade your Cortex XSOAR server, disable SAML authentication integration. You can also restrict network access to the Cortex XSOAR server to allow only trusted users to further reduce the impact of this issue.

Category

8.1
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.14%
Vendor Advisory paloaltonetworks.com
Affected: Palo Alto Networks Cortex XSOAR
Published at:
Updated at:

References

Link Tags
https://security.paloaltonetworks.com/CVE-2021-3051 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-3051?
CVE-2021-3051 has been scored as a high severity vulnerability.
How to fix CVE-2021-3051?
To fix CVE-2021-3051: This issue is fixed in Cortex XSOAR 5.5.0 build 1578677, Cortex XSOAR 6.0.2 build 1576452, Cortex XSOAR 6.1.0 build 1578663, Cortex XSOAR 6.2.0 build 1578666, and all later Cortex XSOAR versions.
Is CVE-2021-3051 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-3051 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-2021-3051?
CVE-2021-3051 affects Palo Alto Networks Cortex XSOAR.
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