GHSA-5jpm-x58v-624v

Suggest an improvement
Source
https://github.com/advisories/GHSA-5jpm-x58v-624v
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/03/GHSA-5jpm-x58v-624v/GHSA-5jpm-x58v-624v.json
JSON Data
https://api.test.osv.dev/v1/vulns/GHSA-5jpm-x58v-624v
Aliases
Related
Published
2024-03-25T19:40:50Z
Modified
2024-10-15T05:57:09.926122Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
Summary
Netty's HttpPostRequestDecoder can OOM
Details

Summary

The HttpPostRequestDecoder can be tricked to accumulate data. I have spotted currently two attack vectors

Details

  1. While the decoder can store items on the disk if configured so, there are no limits to the number of fields the form can have, an attacher can send a chunked post consisting of many small fields that will be accumulated in the bodyListHttpData list.
  2. The decoder cumulates bytes in the undecodedChunk buffer until it can decode a field, this field can cumulate data without limits

PoC

Here is a Netty branch that provides a fix + tests : https://github.com/vietj/netty/tree/post-request-decoder

Here is a reproducer with Vert.x (which uses this decoder) https://gist.github.com/vietj/f558b8ea81ec6505f1e9a6ca283c9ae3

Impact

Any Netty based HTTP server that uses the HttpPostRequestDecoder to decode a form.

Database specific
{
    "nvd_published_at": "2024-03-25T20:15:08Z",
    "cwe_ids": [
        "CWE-770"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2024-03-25T19:40:50Z"
}
References

Affected packages

Maven / io.netty:netty-codec-http

Package

Name
io.netty:netty-codec-http
View open source insights on deps.dev
Purl
pkg:maven/io.netty/netty-codec-http

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.1.108.Final

Affected versions

4.*

4.0.0.Alpha1
4.0.0.Alpha2
4.0.0.Alpha3
4.0.0.Alpha4
4.0.0.Alpha5
4.0.0.Alpha6
4.0.0.Alpha7
4.0.0.Alpha8
4.0.0.Beta1
4.0.0.Beta2
4.0.0.Beta3
4.0.0.CR1
4.0.0.CR2
4.0.0.CR3
4.0.0.CR4
4.0.0.CR5
4.0.0.CR6
4.0.0.CR7
4.0.0.CR8
4.0.0.CR9
4.0.0.Final
4.0.1.Final
4.0.2.Final
4.0.3.Final
4.0.4.Final
4.0.5.Final
4.0.6.Final
4.0.7.Final
4.0.8.Final
4.0.9.Final
4.0.10.Final
4.0.11.Final
4.0.12.Final
4.0.13.Final
4.0.14.Beta1
4.0.14.Final
4.0.15.Final
4.0.16.Final
4.0.17.Final
4.0.18.Final
4.0.19.Final
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4.0.51.Final
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4.0.56.Final
4.1.0.Beta1
4.1.0.Beta2
4.1.0.Beta3
4.1.0.Beta4
4.1.0.Beta5
4.1.0.Beta6
4.1.0.Beta7
4.1.0.Beta8
4.1.0.CR1
4.1.0.CR2
4.1.0.CR3
4.1.0.CR4
4.1.0.CR5
4.1.0.CR6
4.1.0.CR7
4.1.0.Final
4.1.1.Final
4.1.2.Final
4.1.3.Final
4.1.4.Final
4.1.5.Final
4.1.6.Final
4.1.7.Final
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