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Red Hat Security Advisory 2023-6154-01

Red Hat Security Advisory 2023-6154-01 - Secondary Scheduler Operator for Red Hat OpenShift 1.2.0. Issues addressed include a denial of service vulnerability.

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#vulnerability#web#red_hat#ddos#dos#js#ssl

The following data is constructed from data provided by Red Hat’s json file at:

https://access.redhat.com/security/data/csaf/v2/advisories/2023/rhsa-2023_6154.json

Red 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 Advisory

Synopsis: Important: Secondary Scheduler Operator for Red Hat OpenShift 1.2.0
Advisory ID: RHSA-2023:6154-01
Product: Openshift Secondary Scheduler Operator
Advisory URL: https://access.redhat.com/errata/RHSA-2023:6154
Issue date: 2023-11-01
Revision: 01
CVE Names: CVE-2023-39318
====================================================================

Summary:

Secondary Scheduler Operator for Red Hat OpenShift 1.2.0

Description:

The Secondary Scheduler Operator for Red Hat OpenShift is an optional
operator that makes it possible to deploy a secondary scheduler by
providing a scheduler image. You can run a scheduler with custom
plugins without applying additional manifests, such as cluster roles
and deployments.

Security Fix(es):

  • golang: net/http, x/net/http2: rapid stream resets can cause excessive work (CVE-2023-39325)

  • HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (CVE-2023-44487)

  • golang: html/template: improper handling of HTML-like comments within script contexts (CVE-2023-39318)

  • golang: html/template: improper handling of special tags within script contexts (CVE-2023-39319)

  • golang: crypto/tls: panic when processing post-handshake message on QUIC connections (CVE-2023-39321)

  • golang: crypto/tls: lack of a limit on buffered post-handshake (CVE-2023-39322)

Solution:

https://access.redhat.com/articles/11258

CVEs:

CVE-2023-39318

References:

https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/security/vulnerabilities/RHSB-2023-003

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A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by the http2.Server.MaxConcurrentStreams setting, resetting an in-progress request allows the attacker to create a new request while the existing one is still executing. With the fix applied, HTTP/2 servers now bound the number of simultaneously executing handler goroutines to the stream concurrency limit (MaxConcurrentStreams). New requests arriving when at the limit (which can only happen after the client has reset an existing, in-flight request) will be queued until a handler exits. If the request queue grows too large, the server will terminate the connection. This issue is also fixed in golang.org/x/net/http2 for users manually configuring HTTP/2. The default stream concurrency limit is 250 streams (requests) per HTTP/2 connection. This value may be adjusted using the golang.org/x/net/http2 package; see ...

CVE-2023-39325: net/http, x/net/http2: rapid stream resets can cause excessive work (CVE-2023-39325) · Issue #63417 · golang/go

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