CVE-2023-4639: Undertow core Undertow Incorrectly Parses Cookies Vulnerability
HIGHCVE-2023-4639 is a HIGH (CVSS 7.4) undertow incorrectly parses cookies vulnerability (CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')) affecting Undertow core libraries in the Maven ecosystem. The issue involves undertow incorrectly parses cookies. Remediation is available by upgrading affected packages to version 2.3.11.Final, 2.2.30.Final.
CVE-2023-4639 at a Glance
Security Impact
CVSS: 7.4
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N).
How to Fix CVE-2023-4639
To remediate this vulnerability, upgrade all affected Undertow core dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
<dependency>
<groupId>io.undertow</groupId>
<artifactId>undertow-core</artifactId>
<version>2.3.11.Final</version>
</dependency><dependency>
<groupId>io.undertow</groupId>
<artifactId>undertow-core</artifactId>
<version>2.2.30.Final</version>
</dependency>Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:tree -Dincludes=io.undertowHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2023-4639, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:tree -Dincludes=io.undertowAnalyze the terminal output to locate any version of Undertow core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.3.11.Final), your application is affected.
Note: The mvn dependency:tree -Dincludes=io.undertow command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling'), where the product acts as an intermediary http agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed http requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination. In Undertow core, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2023-4639 Affected Undertow core Versions
2 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
io.undertow:undertow-core
|
Maven |
≥ 2.3.0.Alpha1
< 2.3.11.Final
|
2.3.11.Final
|
|
io.undertow:undertow-core
|
Maven |
< 2.2.30.Final
|
2.2.30.Final
|
References
Frequently Asked Questions
What is CVE-2023-4639?
Which Undertow core versions are affected?
What version fixes CVE-2023-4639?
Is undertow-core affected?
What is the CVSS score of CVE-2023-4639?
What CWE is associated with CVE-2023-4639?
How can I check Maven dependencies for CVE-2023-4639?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-3jrv-jgp8-45v3",
"modified" : "2025-02-07T18:31:17Z",
"published" : "2024-11-17T12:30:29Z",
"aliases" : [ "CVE-2023-4639" ],
"summary" : "Undertow incorrectly parses cookies",
"details" : "A flaw was found in Undertow, which incorrectly parses cookies with certain value-delimiting characters in incoming requests. This issue could allow an attacker to construct a cookie value to exfiltrate HttpOnly cookie values or spoof arbitrary additional cookie values, leading to unauthorized data access or modification. The main threat from this flaw impacts data confidentiality and integrity.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Maven",
"name" : "io.undertow:undertow-core"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "2.3.0.Alpha1"
}, {
"fixed" : "2.3.11.Final"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Maven",
"name" : "io.undertow:undertow-core"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "2.2.30.Final"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-4639"
}, {
"type" : "WEB",
"url" : "https://github.com/undertow-io/undertow/commit/1f93a979d2ac264798e5779b5b7172dfafe0066f"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2024:1674"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2024:1675"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2024:1676"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2024:1677"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2024:2763"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2024:2764"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2024:3919"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/security/cve/CVE-2023-4639"
}, {
"type" : "WEB",
"url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2166022"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/undertow-io/undertow"
}, {
"type" : "WEB",
"url" : "https://security.netapp.com/advisory/ntap-20250207-0001"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-444" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2024-11-18T20:08:30Z",
"nvd_published_at" : "2024-11-17T11:15:05Z"
}
}