CWE
400 770
Advisory Published
Advisory Published
Updated

CVE-2023-26048

First published: Tue Apr 18 2023(Updated: )

### Impact 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 a 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. A very large number of parts may cause the same problem. ### Patches Patched in Jetty versions * 9.4.51.v20230217 - via PR #9345 * 10.0.14 - via PR #9344 * 11.0.14 - via PR #9344 ### Workarounds Multipart parameter `maxRequestSize` must be set to a non-negative value, so the whole multipart content is limited (although still read into memory). Limiting multipart parameter `maxFileSize` won't be enough because an attacker can send a large number of parts that summed up will cause memory issues. ### References * https://github.com/eclipse/jetty.project/issues/9076 * https://github.com/jakartaee/servlet/blob/6.0.0/spec/src/main/asciidoc/servlet-spec-body.adoc#32-file-upload

Credit: security-advisories@github.com security-advisories@github.com security-advisories@github.com

Affected SoftwareAffected VersionHow to fix
maven/org.eclipse.jetty:jetty-server<9.4.51.v20230217
9.4.51.v20230217
maven/org.eclipse.jetty:jetty-server>=11.0.0<11.0.14
11.0.14
maven/org.eclipse.jetty:jetty-server>=10.0.0<10.0.14
10.0.14
Eclipse Jetty<9.4.51
Eclipse Jetty>=10.0.0<10.0.14
Eclipse Jetty>=11.0.0<11.0.14
debian/jetty9<=9.4.16-0+deb10u1
9.4.50-4+deb10u1
9.4.39-3+deb11u2
9.4.50-4+deb11u1
9.4.50-4+deb12u2
9.4.53-1
redhat/jetty-server<9.4.51
9.4.51
redhat/jetty-server<10.0.14
10.0.14
redhat/jetty-server<11.0.14
11.0.14
IBM Sterling Secure Proxy<=6.0.3
IBM Sterling Secure Proxy<=6.1.0

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2023-26048?

    CVE-2023-26048 is a vulnerability in Eclipse Jetty that allows for a denial of service attack caused by an out of memory flaw in the HttpServlet.

  • What is the impact of CVE-2023-26048?

    The impact of CVE-2023-26048 is that servlets with multipart support may cause an OutOfMemoryError when a client sends a multipart request with a part that has a name but no filename and a very large content.

  • What is the severity of CVE-2023-26048?

    The severity of CVE-2023-26048 is medium with a CVSS score of 5.3.

  • How do I fix CVE-2023-26048?

    To fix CVE-2023-26048, you need to update your Eclipse Jetty to version 11.0.14, 10.0.14, or 9.4.51.

  • Where can I find more information about CVE-2023-26048?

    You can find more information about CVE-2023-26048 on the GitHub advisory page and the NIST vulnerability database.

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