Bug 2155515 (CVE-2022-4415) - CVE-2022-4415 systemd: local information leak due to systemd-coredump not respecting fs.suid_dumpable kernel setting
Summary: CVE-2022-4415 systemd: local information leak due to systemd-coredump not res...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2022-4415
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2155516 2155517 2155518 2155519 2155520 2155521 2155522
Blocks: 2151929
TreeView+ depends on / blocked
 
Reported: 2022-12-21 12:26 UTC by Sandipan Roy
Modified: 2024-03-05 16:18 UTC (History)
12 users (show)

Fixed In Version:
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Doc Text:
A vulnerability was found in systemd. This security flaw can cause a local information leak due to systemd-coredump not respecting the fs.suid_dumpable kernel setting.
Clone Of:
Environment:
Last Closed: 2023-03-08 23:55:41 UTC
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2023:0837 0 None None None 2023-02-21 09:22:28 UTC
Red Hat Product Errata RHSA-2023:0954 0 None None None 2023-02-28 08:18:58 UTC
Red Hat Product Errata RHSA-2024:1105 0 None None None 2024-03-05 16:18:31 UTC

Description Sandipan Roy 2022-12-21 12:26:57 UTC 
systemd-coredump sets the sysctl fs.suid_dumpable by default to 2 via a sysctl.d drop-in configuration file. For the kernel's builtin coredump
handling this setting means that core dumps for setuid (or otherwise privileged) processes will be written to disk but will only be accessible to the root user to avoid sensitive data leaking to unprivileged user accounts. See also `man 5 proc` for the full documentation of this sysctl.

https://github.com/systemd/systemd/commit/b7641425659243c09473cd8fb3aef2c0d4a3eb9c
Comment 3 Sandipan Roy 2022-12-21 12:31:57 UTC 
Created systemd tracking bugs for this issue:

Affects: fedora-36 [bug 2155521]
Affects: fedora-37 [bug 2155522]
Comment 5 errata-xmlrpc 2023-02-21 09:22:26 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:0837 https://access.redhat.com/errata/RHSA-2023:0837
Comment 6 errata-xmlrpc 2023-02-28 08:18:56 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:0954 https://access.redhat.com/errata/RHSA-2023:0954
Comment 9 Product Security DevOps Team 2023-03-08 23:55:39 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2022-4415
Comment 11 errata-xmlrpc 2024-03-05 16:18:28 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Extended Update Support

Via RHSA-2024:1105 https://access.redhat.com/errata/RHSA-2024:1105
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