high
8.1
CWE
347
Advisory Published
Updated

CVE-2021-3051: Cortex XSOAR: Authentication Bypass in SAML Authentication

First published: Wed Sep 08 2021(Updated: )

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.

Credit: psirt@paloaltonetworks.com

Affected SoftwareAffected VersionHow to fix
Paloaltonetworks Cortex Xsoar=5.5.0
Paloaltonetworks Cortex Xsoar=5.5.0-70066
Paloaltonetworks Cortex Xsoar=5.5.0-73387
Paloaltonetworks Cortex Xsoar=5.5.0-75211
Paloaltonetworks Cortex Xsoar=5.5.0-78518
Paloaltonetworks Cortex Xsoar=5.5.0-94592
Paloaltonetworks Cortex Xsoar=6.0.2
Paloaltonetworks Cortex Xsoar=6.0.2-90947
Paloaltonetworks Cortex Xsoar=6.0.2-93351
Paloaltonetworks Cortex Xsoar=6.0.2-94597
Paloaltonetworks Cortex Xsoar=6.0.2-97682
Paloaltonetworks Cortex Xsoar=6.1.0
Paloaltonetworks Cortex Xsoar=6.1.0-1016923
Paloaltonetworks Cortex Xsoar=6.1.0-1031903
Paloaltonetworks Cortex Xsoar=6.1.0-1077664
Paloaltonetworks Cortex Xsoar=6.1.0-1209934
Paloaltonetworks Cortex Xsoar=6.1.0-1271079
Paloaltonetworks Cortex Xsoar=6.1.0-848144
Paloaltonetworks Cortex Xsoar=6.2.0
Paloaltonetworks Cortex Xsoar=6.2.0-1271082
Paloaltonetworks Cortex Xsoar=6.2.0-1321594
Paloaltonetworks Cortex Xsoar=6.2.0-1473927

Remedy

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.

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Reference Links

Frequently Asked Questions

  • What is CVE-2021-3051?

    CVE-2021-3051 is an improper verification of cryptographic signature vulnerability in Cortex XSOAR SAML authentication.

  • What is the severity of CVE-2021-3051?

    The severity of CVE-2021-3051 is high, with a CVSS score of 8.1.

  • Which version of Cortex XSOAR is affected by CVE-2021-3051?

    Cortex XSOAR versions 5.5.0 to 6.2.0 are affected by CVE-2021-3051.

  • How does CVE-2021-3051 impact the system?

    CVE-2021-3051 allows an unauthenticated attacker with specific knowledge of the Cortex XSOAR instance to access protected resources and perform unauthorized actions.

  • Is there a fix available for CVE-2021-3051?

    Yes, Palo Alto Networks has released a security advisory with mitigation steps for CVE-2021-3051.

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