CVE-2023-42457

Description

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).

How to fix CVE-2023-42457

To remediate CVE-2023-42457, upgrade the affected package to a fixed version below.

• —upgrade to 2.0.1 or later
• —upgrade to 77846a9842889b24f35e8bedc2e9d461388d3302 or later

Is CVE-2023-42457 being exploited?

Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.

Affected packages (2)

• >= 2.0.0a1, < 2.0.1
• from 0, < 77846a9842889b24f35e8bedc2e9d461388d3302, < 43b4a7e86206e237e1de5ca3817ed071575882f7 | from 0

CVSS scores

References (7)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2023-42457
• PATCHgithub.com/plone/plone.rest
• WEBgithub.com/plone/plone.rest/commit/43b4a7e86206e237e1de5ca3817ed071575882f7
• WEBgithub.com/plone/plone.rest/commit/77846a9842889b24f35e8bedc2e9d461388d3302