Headline
CVE-2023-3223
A flaw was found in undertow. Servlets annotated with @MultipartConfig may cause an OutOfMemoryError due to large multipart content. This may allow unauthorized users to cause remote Denial of Service (DoS) attack. If the server uses fileSizeThreshold to limit the file size, it’s possible to bypass the limit by setting the file name in the request to null.
Issued:
2023-08-31
Updated:
2023-08-31
RHSA-2023:4918 - Security Advisory
- Overview
- Updated Packages
Synopsis
Important: Red Hat Single Sign-On 7.6.5 security update on RHEL 7
Type/Severity
Security Advisory: Important
Red Hat Insights patch analysis
Identify and remediate systems affected by this advisory.
View affected systems
Topic
New Red Hat Single Sign-On 7.6.5 packages are 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
Red Hat Single Sign-On 7.6 is a standalone server, based on the Keycloak project, that provides authentication and standards-based single sign-on capabilities for web and mobile applications.
This release of Red Hat Single Sign-On 7.6.5 on RHEL 7 serves as a replacement for Red Hat Single Sign-On 7.6.4, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References.
Security Fix(es):
- jettison: Uncontrolled Recursion in JSONArray (CVE-2023-1436)
- jackson-databind: Possible DoS if using JDK serialization to serialize JsonNode (CVE-2021-46877)
- undertow: OutOfMemoryError due to @MultipartConfig handling (CVE-2023-3223)
For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.
Solution
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
Affected Products
- Red Hat Single Sign-On 7.6 for RHEL 7 x86_64
Fixes
- BZ - 2182788 - CVE-2023-1436 jettison: Uncontrolled Recursion in JSONArray
- BZ - 2185707 - CVE-2021-46877 jackson-databind: Possible DoS if using JDK serialization to serialize JsonNode
- BZ - 2209689 - CVE-2023-3223 undertow: OutOfMemoryError due to @MultipartConfig handling
Red Hat Single Sign-On 7.6 for RHEL 7
SRPM
rh-sso7-keycloak-18.0.9-1.redhat_00001.1.el7sso.src.rpm
SHA-256: 815b38ee5176e3db39d67d75c58e3da2d2497beb98bf0285571d956ce2f813c2
x86_64
rh-sso7-keycloak-18.0.9-1.redhat_00001.1.el7sso.noarch.rpm
SHA-256: 1d66f533b329f7eb6502b3c1883a610f0ba13eb91192a770eebdc588bac5cacb
rh-sso7-keycloak-server-18.0.9-1.redhat_00001.1.el7sso.noarch.rpm
SHA-256: f74947d427d57dfa47aa747c0a22964487151056b44a88eeeaa7bc8d41d564bd
The Red Hat security contact is [email protected]. More contact details at https://access.redhat.com/security/team/contact/.
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