RHSA-2021:2051
Vulnerability from csaf_redhat - Published: 2021-05-19 15:21 - Updated: 2026-03-21 05:04Summary
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.3.7 security update
Severity
Moderate
Notes
Topic: A security update is now available for Red Hat JBoss Enterprise Application Platform 7.3.
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 from the CVE link(s) in the References section.
Details: Red Hat JBoss Enterprise Application Platform 7 is a platform for Java applications based on the WildFly application runtime.
This release of Red Hat JBoss Enterprise Application Platform 7.3.7 serves as a replacement for Red Hat JBoss Enterprise Application Platform 7.3.6, and includes bug fixes and enhancements. See the Red Hat JBoss Enterprise Application Platform 7.3.7 Release Notes for information about the most significant bug fixes and enhancements included in this release.
Security Fix(es):
* velocity: arbitrary code execution when attacker is able to modify templates (CVE-2020-13936)
* netty: Information disclosure via the local system temporary directory (CVE-2021-21290)
* netty: possible request smuggling in HTTP/2 due missing validation (CVE-2021-21295)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) 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 was found in velocity. An attacker, able to modify Velocity templates, may execute arbitrary Java code or run arbitrary system commands with the same privileges as the account running the Servlet container. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
6.6 (Medium)
Vendor Fix
Before applying this update, back up your existing Red Hat JBoss Enterprise Application Platform installation and deployed applications.
The References section of this erratum contains a download link (you must log in to download the update).
The JBoss server process must be restarted for the update to take effect.
https://access.redhat.com/errata/RHSA-2021:2051
In Netty there is a vulnerability on Unix-like systems involving an insecure temp file. When netty's multipart decoders are used, a local information disclosure can occur via the local system temporary directory if temporary storing uploads on the disk is enabled. On unix-like systems, the temporary directory is shared between all user. As such, writing to this directory using APIs that do not explicitly set the file/directory permissions can lead to information disclosure.
6.2 (Medium)
Vendor Fix
Before applying this update, back up your existing Red Hat JBoss Enterprise Application Platform installation and deployed applications.
The References section of this erratum contains a download link (you must log in to download the update).
The JBoss server process must be restarted for the update to take effect.
https://access.redhat.com/errata/RHSA-2021:2051
In Netty (io.netty:netty-codec-http2) before version 4.1.60.Final there is a vulnerability that enables request smuggling. If a Content-Length header is present in the original HTTP/2 request, the field is not validated by `Http2MultiplexHandler` as it is propagated up. This is fine as long as the request is not proxied through as HTTP/1.1. If the request comes in as an HTTP/2 stream, gets converted into the HTTP/1.1 domain objects (`HttpRequest`, `HttpContent`, etc.) via `Http2StreamFrameToHttpObjectCodec `and then sent up to the child channel's pipeline and proxied through a remote peer as HTTP/1.1 this may result in request smuggling.
5.9 (Medium)
Vendor Fix
Before applying this update, back up your existing Red Hat JBoss Enterprise Application Platform installation and deployed applications.
The References section of this erratum contains a download link (you must log in to download the update).
The JBoss server process must be restarted for the update to take effect.
https://access.redhat.com/errata/RHSA-2021:2051
References
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"title": "netty: possible request smuggling in HTTP/2 due missing validation"
}
]
}
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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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