{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-43656 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2023-43656 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-43656 is a medium-severity code injection vulnerability in matrix-org matrix-hookshot, published on 27 Sep 2023. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-43656 and fix it if it is affected.\n\nWhat it is: CVE-2023-43656 is a medium-severity code injection vulnerability in matrix-org matrix-hookshot, published on 27 Sep 2023. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-43656 in the wild and no public exploit code.\n\nAffected product: matrix-org matrix-hookshot. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2023-43656/ (Markdown: https://insights.sbomify.com/CVE-2023-43656/index.md)","id":"CVE-2023-43656","markdown":"https://insights.sbomify.com/CVE-2023-43656/index.md","name":"CVE-2023-43656","record":{"aliases":["GHSA-fr97-pv6w-4cj6"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Matrix bridge bot","requires_auth":"none","summary":"Attackers can escape the vm2 sandbox to execute arbitrary code if JavaScript transformation functions are enabled for untrusted users.","user_interaction":"not_required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"hookshot","vendor":"matrix"}],"cvss":{"score":5.6,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L","version":"3.1"},"cwes":[{"id":"CWE-74","name":"Improper Neutralization of Special Elements in Output Used by a Downstream Component"}],"description":"matrix-hookshot is a Matrix bot for connecting to external services like GitHub, GitLab, JIRA, and more. Instances that have enabled transformation functions (those that have `generic.allowJsTransformationFunctions` in their config), may be vulnerable to an attack where it is possible to break out of the `vm2` sandbox and as a result Hookshot will be vulnerable to this. This problem is only likely to affect users who have allowed untrusted users to apply their own transformation functions. If you have only enabled a limited set of trusted users, this threat is reduced (though not eliminated). Version 4.5.0 and above of hookshot include a new sandbox library which should better protect users. Users are advised to upgrade. Users unable to upgrade should disable `generic.allowJsTransformationFunctions` in the config.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Sandbox escape for instances that have enabled transformation functions in matrix-hookshot","id":"CVE-2023-43656","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"code_injection","year":"2023"},"n_packages":0,"n_references":2,"next":{"headline":"Improper escaping of encrypted topic titles can lead to Cross-site Scripting under non-default site configuration","id":"CVE-2023-43657"},"packages":[],"prev":{"headline":"Remote Code Execution via web-accessible composer.phar","id":"CVE-2023-43655"},"products":["matrix-hookshot"],"published":"2023-09-27","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2024-09-20","vendors":["matrix-org"]},"summary":"Attackers can escape the vm2 sandbox to execute arbitrary code if JavaScript transformation functions are enabled for untrusted users.","url":"https://insights.sbomify.com/CVE-2023-43656/"}