Mock: privilege escalation for users that can access mock configuration
Vulnerability Description
The Mock software contains a vulnerability wherein an attacker could potentially exploit privilege escalation, enabling the execution of arbitrary code with root user privileges. This weakness stems from the absence of proper sandboxing during the expansion and execution of Jinja2 templates, which may be included in certain configuration parameters. While the Mock documentation advises treating users added to the mock group as privileged, certain build systems invoking mock on behalf of users might inadvertently permit less privileged users to define configuration tags. These tags could then be passed as parameters to mock during execution, potentially leading to the utilization of Jinja2 templates for remote privilege escalation and the execution of arbitrary code as the root user on the build server.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2023-6395
Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Red Hat would like to thank Sankin Nikita Alexeevich for reporting this issue.
References
- https://access.redhat.com/security/cve/CVE-2023-6395
- https://bugzilla.redhat.com/show_bug.cgi?id=2252206
- https://github.com/xsuchy/templated-dictionary/commit/0740bd0ca8d487301881541028977d120f8b8933
- https://github.com/xsuchy/templated-dictionary/commit/bcd90f0dafa365575c4b101e6f5d98c4ef4e4b69
- http://www.openwall.com/lists/oss-security/2024/01/16/1
- http://www.openwall.com/lists/oss-security/2024/01/16/3
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NBFYREAJH4T7GXXQZ4GJEREN4Q3AHS3K/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/62SP2BJC2AFLFJJAEHPGZ3ZINTBTI7AN/
