calibre is an e-book manager. Prior to 9.12.0, calibre processes attacker-controlled composite_template metadata from a malicious EPUB, OPF, PDF, or similar file through program: and a nested template() call whose formatter does not inherit allow_python_templates=False, allowing a nested python: template to reach compile_python_template and execute arbitrary Python code when the file is opened or imported. This issue is fixed in version 9.12.0.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
Passive
Minimal interaction
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products
kovidgoyal:calibre
References 3
https://github.com/kovidgoyal/calibre/security/advisories/GHSA-4f7g-rjfp-hmvx
https://github.com/kovidgoyal/calibre/security/advisories/GHSA-4f7g-rjfp-hmvx
https://github.com/kovidgoyal/calibre/commit/dac9990458374a81a5372a768bba6527d9…
https://github.com/kovidgoyal/calibre/commit/dac9990458374a81a5372a768bba6527d965aac8
https://github.com/kovidgoyal/calibre/releases/tag/v9.12.0
https://github.com/kovidgoyal/calibre/releases/tag/v9.12.0