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Red Hat Security Advisory 2024-1417-03
Red Hat Security Advisory 2024-1417-03 - An update for libX11 is now available for Red Hat Enterprise Linux 8.8 Extended Update Support. Issues addressed include a buffer overflow vulnerability.
The following advisory data is extracted from:https://access.redhat.com/security/data/csaf/v2/advisories/2024/rhsa-2024_1417.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: Moderate: libX11 security updateAdvisory ID: RHSA-2024:1417-03Product: Red Hat Enterprise LinuxAdvisory URL: https://access.redhat.com/errata/RHSA-2024:1417Issue date: 2024-03-19Revision: 03CVE Names: CVE-2023-3138====================================================================Summary: An update for libX11 is now available for Red Hat Enterprise Linux 8.8 Extended Update Support.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.Description:The libX11 packages contain the core X11 protocol client library.Security Fix(es):* libX11: InitExt.c can overwrite unintended portions of the Display structure if the extension request leads to a buffer overflow (CVE-2023-3138)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.Solution:https://access.redhat.com/articles/11258CVEs:CVE-2023-3138References:https://access.redhat.com/security/updates/classification/#moderatehttps://bugzilla.redhat.com/show_bug.cgi?id=2213748Related news
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Red Hat Security Advisory 2024-1088-03 - An update for libX11 is now available for Red Hat Enterprise Linux 9.2 Extended Update Support. Issues addressed include a buffer overflow vulnerability.
A vulnerability was found in libX11. The security flaw occurs because the functions in src/InitExt.c in libX11 do not check that the values provided for the Request, Event, or Error IDs are within the bounds of the arrays that those functions write to, using those IDs as array indexes. They trust that they were called with values provided by an Xserver adhering to the bounds specified in the X11 protocol, as all X servers provided by X.Org do. As the protocol only specifies a single byte for these values, an out-of-bounds value provided by a malicious server (or a malicious proxy-in-the-middle) can only overwrite other portions of the Display structure and not write outside the bounds of the Display structure itself, possibly causing the client to crash with this memory corruption.
Debian Linux Security Advisory 5433-1 - Gregory James Duck reported that missing input validation in various functions provided by libx11, the X11 client-side library, may result in denial of service.
Ubuntu Security Notice 6168-2 - USN-6168-1 fixed a vulnerability in libx11. This update provides the corresponding update for Ubuntu 14.04 ESM, Ubuntu 16.04 ESM, and Ubuntu 18.04 ESM. Gregory James Duck discovered that libx11 incorrectly handled certain Request, Event, or Error IDs. If a user were tricked into connecting to a malicious X Server, a remote attacker could possibly use this issue to cause libx11 to crash, resulting in a denial of service.
Ubuntu Security Notice 6168-1 - Gregory James Duck discovered that libx11 incorrectly handled certain Request, Event, or Error IDs. If a user were tricked into connecting to a malicious X Server, a remote attacker could possibly use this issue to cause libx11 to crash, resulting in a denial of service.