RHSA-2025:17563
Vulnerability from csaf_redhat - Published: 2025-10-14 13:01 - Updated: 2026-03-24 13:15Summary
Red Hat Security Advisory: Red Hat build of Quarkus 3.20.3 release and security update
Severity
Moderate
Notes
Topic: An update is now available for Red Hat build of Quarkus.
Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability. For more information, see the CVE links in the References section.
Details: This release of Red Hat build of Quarkus 3.20.3 includes the following CVE fixes:
* netty-codec-http: Netty is vulnerable to request smuggling due to incorrect parsing of chunk extensions [quarkus-3.20] (CVE-2025-58056)
* netty-codec: Netty's BrotliDecoder is vulnerable to DoS via zip bomb style attack [quarkus-3.20] (CVE-2025-58057)
For more information, see the release notes page listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw in Netty’s HTTP/1.1 chunked encoding parser allows newline (LF) characters in chunk extensions to be incorrectly treated as the end of the chunk-size line instead of requiring the proper CRLF sequence. This discrepancy can be exploited in rare cases where a reverse proxy interprets the same input differently, potentially enabling HTTP request smuggling attacks such as bypassing access controls or corrupting responses.
7.5 (High)
Vendor Fix
Before applying this update, make sure all previously released errata
relevant to your system have been applied.
For details on how to apply this update, refer to:
https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2025:17563
Workaround
To mitigate this issue, enforce strict RFC compliance on all front-end proxies and load balancers so that lone LF characters in chunk extensions are rejected or normalized before being forwarded. Additionally, configure input validation at the application or proxy layer to block malformed chunked requests, ensuring consistent parsing across all components in the request path.
A flaw was found in Netty. With specially crafted input, BrotliDecoder and some other decompressing decoders will allocate a large number of reachable byte buffers, which can lead to denial of service.
7.5 (High)
Vendor Fix
Before applying this update, make sure all previously released errata
relevant to your system have been applied.
For details on how to apply this update, refer to:
https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2025:17563
Workaround
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
References
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"title": "netty-codec: netty-codec-compression: Netty\u0027s BrotliDecoder is vulnerable to DoS via zip bomb style attack"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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