Undertow: improper state management in proxy protocol parsing causes information leakage
Description
A vulnerability was found in Undertow where the ProxyProtocolReadListener reuses the same StringBuilder instance across multiple requests. This issue occurs when the parseProxyProtocolV1 method processes multiple requests on the same HTTP connection. As a result, different requests may share the same StringBuilder instance, potentially leading to information leakage between requests or responses. In some cases, a value from a previous request or response may be erroneously reused, which could lead to unintended data exposure. This issue primarily results in errors and connection termination but creates a risk of data leakage in multi-request environments.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
io.undertow:undertow-coreMaven | < 2.2.36.Final | 2.2.36.Final |
io.undertow:undertow-coreMaven | >= 2.3.0.Alpha1, < 2.3.17.Final | 2.3.17.Final |
Affected products
2- Range: >= 2.3.0.Alpha1, < 2.3.17.Final
Patches
Vulnerability mechanics
References
18- access.redhat.com/errata/RHSA-2024:11023ghsavendor-advisoryx_refsource_REDHATWEB
- access.redhat.com/errata/RHSA-2024:6508ghsavendor-advisoryx_refsource_REDHATWEB
- access.redhat.com/errata/RHSA-2024:6883ghsavendor-advisoryx_refsource_REDHATWEB
- access.redhat.com/errata/RHSA-2024:7441ghsavendor-advisoryx_refsource_REDHATWEB
- access.redhat.com/errata/RHSA-2024:7442ghsavendor-advisoryx_refsource_REDHATWEB
- access.redhat.com/errata/RHSA-2024:7735ghsavendor-advisoryx_refsource_REDHATWEB
- access.redhat.com/errata/RHSA-2024:7736ghsavendor-advisoryx_refsource_REDHATWEB
- access.redhat.com/errata/RHSA-2024:8080ghsavendor-advisoryx_refsource_REDHATWEB
- access.redhat.com/errata/RHSA-2025:16667ghsavendor-advisoryx_refsource_REDHATWEB
- access.redhat.com/errata/RHSA-2026:0743ghsavendor-advisoryx_refsource_REDHATWEB
- github.com/advisories/GHSA-9623-mqmm-5rcfghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2024-7885ghsaADVISORY
- access.redhat.com/security/cve/CVE-2024-7885ghsavdb-entryx_refsource_REDHATWEB
- bugzilla.redhat.com/show_bug.cgighsaissue-trackingx_refsource_REDHATWEB
- github.com/undertow-io/undertow/blob/182e4ca1543c52f438b0244c930dca3d8b6e68e3/core/src/main/java/io/undertow/server/protocol/proxy/ProxyProtocolReadListener.javaghsaWEB
- github.com/undertow-io/undertow/commit/80c125e09068ac52ed0a9acde266ef12f8ed7ae1ghsaWEB
- github.com/undertow-io/undertow/commit/ce5182c37376982ef0abee34fce0d8c0aab0fab8ghsaWEB
- security.netapp.com/advisory/ntap-20241011-0004ghsaWEB
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