CVE-2023-42457

plone.rest vulnerable to Denial of Service when ++api++ is used many times

CVSS 7.5 HIGHEPSS 0.8%CWE-400 CWE-770

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.5EPSS 0.8%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

21 Sep 2023Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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).

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

Affected products

plone · plone.rest

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References

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