Resource exhaustion in Plone Plone.rest
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).
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.010 (61.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 61.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.010 · change: +0.002
Affected products
- Plone Plone.rest — versions >= 2.0.0a1, < 2.0.1, = 3.0.0
- Plone Rest — versions 2.0.0, 3.0.0
Weakness classification (CWE)
References
- github.com/plone/plone.rest/security/advisories/GHSA-h6rp-mprm-xgcq (Vendor Advisory)
- github.com/plone/plone.rest/commit/43b4a7e86206e237e1de5ca3817ed071575882f7 (Patch)
- github.com/plone/plone.rest/commit/77846a9842889b24f35e8bedc2e9d461388d3302 (Patch)
- www.openwall.com/lists/oss-security/2023/09/22/2 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-42457?
- CVE-2023-42457 is a high-severity vulnerability in Plone Plone.rest, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2023-09-21.
- How severe is CVE-2023-42457?
- High severity. CVSS v3 base score is 7.5 out of 10.