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THREATINT
PUBLISHED

CVE-2023-6395

Mock: privilege escalation for users that can access mock configuration



Assignerredhat
Reserved2023-11-30
Published2024-01-16
Updated2024-10-25

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.



MEDIUM: 6.7CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Product status

Default status
affected

Default status
unaffected

Default status
affected

Default status
affected

Timeline

2023-11-30:Reported to Red Hat.
2024-01-16:Made public.

Credits

Red Hat would like to thank Sankin Nikita Alexeevich for reporting this issue.

References

https://access.redhat.com/security/cve/CVE-2023-6395 vdb-entry

https://bugzilla.redhat.com/show_bug.cgi?id=2252206 (RHBZ#2252206) issue-tracking

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/

cve.org CVE-2023-6395

nvd.nist.gov CVE-2023-6395

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