ghsa-qw69-rqj8-6qw8
Vulnerability from github
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
{ "affected": [ { "package": { "ecosystem": "Maven", "name": "org.eclipse.jetty:jetty-server" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "9.4.51.v20230217" } ], "type": "ECOSYSTEM" } ] }, { "package": { "ecosystem": "Maven", "name": "org.eclipse.jetty:jetty-server" }, "ranges": [ { "events": [ { "introduced": "10.0.0" }, { "fixed": "10.0.14" } ], "type": "ECOSYSTEM" } ] }, { "package": { "ecosystem": "Maven", "name": "org.eclipse.jetty:jetty-server" }, "ranges": [ { "events": [ { "introduced": "11.0.0" }, { "fixed": "11.0.14" } ], "type": "ECOSYSTEM" } ] } ], "aliases": [ "CVE-2023-26048" ], "database_specific": { "cwe_ids": [ "CWE-400", "CWE-770" ], "github_reviewed": true, "github_reviewed_at": "2023-04-19T18:15:45Z", "nvd_published_at": "2023-04-18T21:15:08Z", "severity": "MODERATE" }, "details": "### Impact\nServlets 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.\n\nThis happens even with the default settings of `fileSizeThreshold=0` which should stream the whole part content to disk.\n\nAn attacker client may send a large multipart request and cause the server to throw `OutOfMemoryError`.\nHowever, the server may be able to recover after the `OutOfMemoryError` and continue its service -- although it may take some time.\n\nA very large number of parts may cause the same problem.\n\n### Patches\nPatched in Jetty versions\n\n* 9.4.51.v20230217 - via PR #9345\n* 10.0.14 - via PR #9344\n* 11.0.14 - via PR #9344\n\n### Workarounds\nMultipart parameter `maxRequestSize` must be set to a non-negative value, so the whole multipart content is limited (although still read into memory).\nLimiting multipart parameter `maxFileSize` won\u0027t be enough because an attacker can send a large number of parts that summed up will cause memory issues.\n\n### References\n* https://github.com/eclipse/jetty.project/issues/9076\n* https://github.com/jakartaee/servlet/blob/6.0.0/spec/src/main/asciidoc/servlet-spec-body.adoc#32-file-upload\n", "id": "GHSA-qw69-rqj8-6qw8", "modified": "2023-04-19T18:15:45Z", "published": "2023-04-19T18:15:45Z", "references": [ { "type": "WEB", "url": "https://github.com/eclipse/jetty.project/security/advisories/GHSA-qw69-rqj8-6qw8" }, { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26048" }, { "type": "WEB", "url": "https://github.com/eclipse/jetty.project/issues/9076" }, { "type": "WEB", "url": "https://github.com/eclipse/jetty.project/pull/9344" }, { "type": "WEB", "url": "https://github.com/eclipse/jetty.project/pull/9345" }, { "type": "PACKAGE", "url": "https://github.com/eclipse/jetty.project" }, { "type": "WEB", "url": "https://github.com/eclipse/jetty.project/releases/tag/jetty-9.4.51.v20230217" }, { "type": "WEB", "url": "https://github.com/jakartaee/servlet/blob/6.0.0/spec/src/main/asciidoc/servlet-spec-body.adoc#32-file-upload" }, { "type": "WEB", "url": "https://lists.debian.org/debian-lts-announce/2023/09/msg00039.html" }, { "type": "WEB", "url": "https://security.netapp.com/advisory/ntap-20230526-0001" }, { "type": "WEB", "url": "https://www.debian.org/security/2023/dsa-5507" } ], "schema_version": "1.4.0", "severity": [ { "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "type": "CVSS_V3" } ], "summary": "OutOfMemoryError for large multipart without filename in Eclipse Jetty" }
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.