CVE-2023-26048
jetty9 - security update
Description
Jetty is a java based web server and servlet engine. In affected versions servlets with multipart support (e.g. annotated with `@MultipartConfig`) that call `HttpServletRequest.getParameter()` or `HttpServletRequest.getParts()` may cause `OutOfMemoryError` when the client sends a multipart request with a part that has a name but no filename and very large content. This happens even with the default settings of `fileSizeThreshold=0` which should stream the whole part content to disk. An attacker client may send a large multipart request and cause the server to throw `OutOfMemoryError`. However, the server may be able to recover after the `OutOfMemoryError` and continue its service -- although it may take some time. This issue has been patched in versions 9.4.51, 10.0.14, and 11.0.14. Users are advised to upgrade. Users unable to upgrade may set the multipart parameter `maxRequestSize` which must be set to a non-negative value, so the whole multipart content is limited (although still read into memory).
How to fix CVE-2023-26048
To remediate CVE-2023-26048, upgrade the affected package to a fixed version below.
- —upgrade to 9.4.39-3+deb11u2 or later
- —upgrade to 9.4.16-0+deb10u3 or later
- —upgrade to 9.4.39-3+deb11u2 or later
- —upgrade to 9.4.51.v20230217 or later
Is CVE-2023-26048 being exploited?
Moderate — EPSS is 43.4%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (4)
- from 0, < 9.4.39-3+deb11u2
- from 0, < 9.4.16-0+deb10u3
- from 0, < 9.4.39-3+deb11u2
- from 0, < 9.4.51.v20230217
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |