Vulnerability Details CVE-2023-42457
plone.rest allows users to use HTTP verbs such as GET, POST, PUT, DELETE, etc. in Plone. Starting in the 2.x branch and prior to versions 2.0.1 and 3.0.1, when the `++api++` traverser is accidentally used multiple times in a url, handling it takes increasingly longer, making the server less responsive. Patches are available in `plone.rest` 2.0.1 and 3.0.1. Series 1.x is not affected. As a workaround, one may redirect `/++api++/++api++` to `/++api++` in one's frontend web server (nginx, Apache).
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 39.3%
CVSS Severity
CVSS v3 Score 7.5
References
- http://www.openwall.com/lists/oss-security/2023/09/22/2
- https://github.com/plone/plone.rest/commit/43b4a7e86206e237e1de5ca3817ed071575882f7
- https://github.com/plone/plone.rest/commit/77846a9842889b24f35e8bedc2e9d461388d3302
- https://github.com/plone/plone.rest/security/advisories/GHSA-h6rp-mprm-xgcq
- http://www.openwall.com/lists/oss-security/2023/09/22/2
- https://github.com/plone/plone.rest/commit/43b4a7e86206e237e1de5ca3817ed071575882f7
- https://github.com/plone/plone.rest/commit/77846a9842889b24f35e8bedc2e9d461388d3302
- https://github.com/plone/plone.rest/security/advisories/GHSA-h6rp-mprm-xgcq