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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.1269 CVE-2021-3035 Bridgecrew Checkov: Unsafe deserialization of Terraform files allows code execution 15 April 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Bridgecrew Checkov Publisher: Palo Alto Operating System: UNIX variants (UNIX, Linux, OSX) Windows Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2021-3035 Original Bulletin: https://security.paloaltonetworks.com/CVE-2021-3035 Comment: This advisory references vulnerabilities in products which run on different platforms. It is recommended that administrators running Bridgecrew Checkov check for an updated version of the software for their operating system. - --------------------------BEGIN INCLUDED TEXT-------------------- Palo Alto Networks Security Advisories / CVE-2021-3035 CVE-2021-3035 Bridgecrew Checkov: Unsafe deserialization of Terraform files allows code execution 047910 Severity 6.7 . MEDIUM Attack Vector NETWORK Attack Complexity LOW Privileges Required HIGH User Interaction NONE Scope UNCHANGED Confidentiality Impact HIGH Integrity Impact HIGH Availability Impact LOW NVD JSON Published 2021-04-14 Updated 2021-04-14 Reference Discovered externally Description An unsafe deserialization vulnerability in Bridgecrew Checkov by Prisma Cloud allows arbitrary code execution when processing a malicious terraform file. This issue impacts Checkov 2.0 versions earlier than Checkov 2.0.26. Checkov 1.0 versions are not impacted. Product Status Versions Affected Unaffected Bridgecrew Checkov 2.0 < 2.0.26 >= 2.0.26 Bridgecrew Checkov 1.0 None all Severity: MEDIUM CVSSv3.1 Base Score: 6.7 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L) Exploitation Status Palo Alto Networks is not aware of any malicious exploitation of this issue. Weakness Type CWE-502 Deserialization of Untrusted Data Solution This issue is fixed in Checkov 2.0.26 and all later releases. Workarounds and Mitigations Do not run Checkov on terraform files from untrusted sources or pull requests. Acknowledgments Palo Alto Networks thanks Kevin Higgs of Trail of Bits for discovering and reporting this issue. Timeline 2021-04-14 Initial publication Terms of usePrivacyProduct Security Assurance and Vulnerability Disclosure Policy Report vulnerabilitiesManage subscriptions (C) 2020 Palo Alto Networks, Inc. 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Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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