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Red Hat Security Advisory 2024-4054-03
Red Hat Security Advisory 2024-4054-03 - An update for python-gunicorn is now available for Red Hat OpenStack Platform 16.2. Issues addressed include a HTTP request smuggling vulnerability.
The following advisory data is extracted from:https://access.redhat.com/security/data/csaf/v2/advisories/2024/rhsa-2024_4054.jsonRed Hat officially shut down their mailing list notifications October 10, 2023. Due to this, Packet Storm has recreated the below data as a reference point to raise awareness. It must be noted that due to an inability to easily track revision updates without crawling Red Hat's archive, these advisories are single notifications and we strongly suggest that you visit the Red Hat provided links to ensure you have the latest information available if the subject matter listed pertains to your environment.- Packet Storm Staff====================================================================Red Hat Security AdvisorySynopsis: Important: Red Hat OpenStack Platform 16.2 (python-gunicorn) security updateAdvisory ID: RHSA-2024:4054-03Product: Red Hat OpenStack PlatformAdvisory URL: https://access.redhat.com/errata/RHSA-2024:4054Issue date: 2024-06-24Revision: 03CVE Names: CVE-2024-1135====================================================================Summary: An update for python-gunicorn is now available for Red Hat OpenStackPlatform 16.2 (Train).Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.Description:Gunicorn (Green Unicorn) is a Python WSGI HTTP server for UNIX.Security Fix(es):* HTTP Request Smuggling due to improper validation of Transfer-Encodingheaders (CVE-2024-1135)For more details about the security issue(s), including the impact, a CVSSscore, acknowledgments, and other related information, refer to the CVEpage listed in the References section.Solution:https://access.redhat.com/articles/11258CVEs:CVE-2024-1135References:https://access.redhat.com/security/updates/classification/#importanthttps://bugzilla.redhat.com/show_bug.cgi?id=2275280Related news
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Gunicorn fails to properly validate Transfer-Encoding headers, leading to HTTP Request Smuggling (HRS) vulnerabilities. By crafting requests with conflicting Transfer-Encoding headers, attackers can bypass security restrictions and access restricted endpoints. This issue is due to Gunicorn's handling of Transfer-Encoding headers, where it incorrectly processes requests with multiple, conflicting Transfer-Encoding headers, treating them as chunked regardless of the final encoding specified. This vulnerability has been shown to allow access to endpoints restricted by gunicorn. To be affected users must have a network path which does not filter out invalid requests. These users are advised to block access to restricted endpoints via a firewall or other mechanism until a fix can be developed.