Описание
In Eclipse Jetty, the HTTP/1.1 parser is vulnerable to request smuggling when chunk extensions are used, similar to the "funky chunks" techniques outlined here:
- https://w4ke.info/2025/06/18/funky-chunks.html
- https://w4ke.info/2025/10/29/funky-chunks-2.html
Jetty terminates chunk extension parsing at \r\n inside quoted strings instead of treating this as an error.
POST / HTTP/1.1
Host: localhost
Transfer-Encoding: chunked
1;ext="val
X
0
GET /smuggled HTTP/1.1
...
Note how the chunk extension does not close the double quotes, and it is able to inject a smuggled request.
A flaw was found in Eclipse Jetty. The HTTP/1.1 parser is vulnerable to request smuggling when chunk extensions are used. An attacker can inject crafted requests to manipulate and trick the parser. This issue can lead to security controls bypass, cache poisoning or unauthorized endpoint access.
Отчет
To exploit this issue, an attacker needs to send a crafted payload to a Jetty server that is behind a reverse proxy or load balancer, specifically with a chunk extension that includes an unclosed double quote before the CRLF to trick the parser. This flaw allows an attacker to bypass security controls, cause cache poisoning or gain unauthorized endpoint access. Due to these reasons, this vulnerability has been rated with an important severity.
Меры по смягчению последствий
Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| OpenShift Developer Tools and Services | jenkins | Affected | ||
| OpenShift Developer Tools and Services | ocp-tools-4/jenkins-rhel8 | Affected | ||
| OpenShift Developer Tools and Services | ocp-tools-4/jenkins-rhel9 | Affected | ||
| Red Hat AMQ Broker 7 | jetty-http | Affected | ||
| Red Hat build of Apache Camel 4 for Quarkus 3 | jetty-http | Affected | ||
| Red Hat build of Apicurio Registry 2 | jetty-http | Not affected | ||
| Red Hat build of Apicurio Registry 3 | jetty-http | Not affected | ||
| Red Hat build of Debezium 2 | jetty-http | Out of support scope | ||
| Red Hat build of Debezium 3 | jetty-http | Will not fix | ||
| Red Hat Data Grid 8 | jetty-http | Not affected |
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Дополнительная информация
Статус:
EPSS
7.4 High
CVSS3
Связанные уязвимости
In Eclipse Jetty, the HTTP/1.1 parser is vulnerable to request smuggling when chunk extensions are used, similar to the "funky chunks" techniques outlined here: * https://w4ke.info/2025/06/18/funky-chunks.html * https://w4ke.info/2025/10/29/funky-chunks-2.html Jetty terminates chunk extension parsing at \r\n inside quoted strings instead of treating this as an error. POST / HTTP/1.1 Host: localhost Transfer-Encoding: chunked 1;ext="val X 0 GET /smuggled HTTP/1.1 ... Note how the chunk extension does not close the double quotes, and it is able to inject a smuggled request.
In Eclipse Jetty, the HTTP/1.1 parser is vulnerable to request smuggling when chunk extensions are used, similar to the "funky chunks" techniques outlined here: * https://w4ke.info/2025/06/18/funky-chunks.html * https://w4ke.info/2025/10/29/funky-chunks-2.html Jetty terminates chunk extension parsing at \r\n inside quoted strings instead of treating this as an error. POST / HTTP/1.1 Host: localhost Transfer-Encoding: chunked 1;ext="val X 0 GET /smuggled HTTP/1.1 ... Note how the chunk extension does not close the double quotes, and it is able to inject a smuggled request.
In Eclipse Jetty, the HTTP/1.1 parser is vulnerable to request smuggli ...
Jetty has HTTP Request Smuggling via Chunked Extension Quoted-String Parsing
EPSS
7.4 High
CVSS3