Title: EGI SVG 'ADVISORY' [TLP:WHITE] HIGH risk use-after-free
vulnerability was found in systemd CVE-2022-2526
[EGI-SVG-CVE-2022-2526]
Date: 2022-08-31
Updated: 2022-09-02, 2022-10-13
Affected software and risk
==========================
HIGH risk vulnerability concerning systemd
Package : systemd
CVE ID : CVE-2022-2526
Bug ID :
CVSS Score : 8.8 [R 1]
Vulnerabilities have been found concerning a user-after-free vulnerability
in systemd when dealing with DNSStream which may allow an unprivileged user
on a local or adjacent network to gain access to the affected system [R 1]
[R 2].
Actions required/recommended
============================
Sites are recommended to update relevant components as soon as possible.
Component installation information
==================================
Sites running RHEL should see [R 1]
Sites running CentOS should see [R 3]
**UPDATE 2022-09-02** update is now available for CentOS7 [R 10]
Sites running Scientific Linux should see [R 4], [R 5]
Sites running Debian should see [R 6]
Sites running Ubuntu should see [R 7]
Sites running RockyLinux should see [R 8]
Sites running Almalinux should see [R 9]
Mitigation
==========
None recommended.
TLP and URL
===========
** WHITE information - Unlimited distribution
- see https://go.egi.eu/tlp for
distribution restrictions **
URL: https://advisories.egi.eu/Advisory-SVG-CVE-2022-2526
Minor updates may be made without re-distribution to the sites
Comments
========
Comments or questions should be sent to svg-rat at mailman.egi.eu
If you find or become aware of another vulnerability which is relevant to EGI
you may report it by e-mail to
report-vulnerability at egi.eu
the EGI Software Vulnerability Group will take a look according to the
procedure defined in [R 99]
References
==========
[R 1] https://access.redhat.com/security/cve/CVE-2022-2526
[R 2] https://vulners.com/redhatcve/RH:CVE-2022-2526
[R 3] https://lists.centos.org/pipermail/centos-announce/
[R 4] https://www.scientificlinux.org/category/sl-errata/
[R 5] https://listserv.fnal.gov/scripts/wa.exe?A2=SCIENTIFIC-LINUX-ERRATA;c9031177.2208
[R 6] https://security-tracker.debian.org/tracker/CVE-2022-2526
[R 7] http://people.canonical.com/~ubuntu-security/cve/2021/CVE-2022-2526.html
[R 8] https://errata.rockylinux.org/
[R 9] AlmaLinux https://errata.almalinux.org/
[R 10] https://lists.centos.org/pipermail/centos-announce/2022-September/073636.html
[R 99] https://documents.egi.eu/public/ShowDocument?docid=3867
Credit
======
SVG was alerted to this vulnerability by Mischa Salle
Timeline
========
Yyyy-mm-dd [EGI-SVG-2022-CVE-2022-2526]
2022-08-26 SVG alerted to this issue by Mischa Salle
2022-08-26 Acknowledgement from the EGI SVG to the reporter
2022-08-31 EGI SVG Risk Assessment completed
2022-08-31 Updated packages available
2022-08-31 Advisory sent to sites
2022-09-02 Update as fixed for CentOS7
2022-10-13 Placed on Advisories.egi.eu
Context
=======
This advisory has been prepared as part of the effort to fulfil EGI SVG's
purpose "To minimize the risk to the EGI infrastructure arising from software
vulnerabilities"
The risk is that assessed by the group, according to the EGI SVG issue handling
procedure [R 99] in the context of how the software is used in the EGI
infrastructure. It is the opinion of the group, we do not guarantee it to be
correct. The risk may also be higher or lower in other deployments depending on
how the software is used.
-----------------------------
This advisory is subject to the Creative commons licence
https://creativecommons.org/licenses/by/4.0/
and the EGI https://www.egi.eu/ Software Vulnerability Group must be credited.
-----------------------------
On behalf of the EGI SVG,