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Red Hat Security Advisory 2024-2625-03
Red Hat Security Advisory 2024-2625-03 - An update for rhc-worker-script is now available for Red Hat Enterprise Linux 7. Issues addressed include a denial of service vulnerability.
The following advisory data is extracted from:https://access.redhat.com/security/data/csaf/v2/advisories/2024/rhsa-2024_2625.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: rhc-worker-script security and enhancement updateAdvisory ID: RHSA-2024:2625-03Product: Red Hat Enterprise LinuxAdvisory URL: https://access.redhat.com/errata/RHSA-2024:2625Issue date: 2024-05-01Revision: 03CVE Names: CVE-2023-45288====================================================================Summary: An update for rhc-worker-script is now available for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having a security impact of Important. 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.Description:The rhc-worker-script packages provide Remote Host Configuration (rhc) worker for executing an interpreted programming language script on hosts managed by Red Hat Insights.Security Fix(es):* golang: net/http, x/net/http2: unlimited number of CONTINUATION frames causes DoS (CVE-2023-45288)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.Enhancement(s):* Include deps information in rhc-worker-script binary (JIRA:HMS-3983)* Set more granular log level for the scripts (JIRA:HMS-3837)Solution:https://access.redhat.com/articles/11258CVEs:CVE-2023-45288References:https://access.redhat.com/security/updates/classification/#importanthttps://bugzilla.redhat.com/show_bug.cgi?id=2268273https://issues.redhat.com/browse/HMS-3837https://issues.redhat.com/browse/HMS-3983Related news
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An attacker may cause an HTTP/2 endpoint to read arbitrary amounts of header data by sending an excessive number of CONTINUATION frames. Maintaining HPACK state requires parsing and processing all HEADERS and CONTINUATION frames on a connection. When a request's headers exceed MaxHeaderBytes, no memory is allocated to store the excess headers, but they are still parsed. This permits an attacker to cause an HTTP/2 endpoint to read arbitrary amounts of header data, all associated with a request which is going to be rejected. These headers can include Huffman-encoded data which is significantly more expensive for the receiver to decode than for an attacker to send. The fix sets a limit on the amount of excess header frames we will process before closing a connection.