Overly broad permissions can turn one compromised account into a much larger security problem. Learn how to reduce unnecessary access, review privileges, and apply least privilege across modern Linux systems. Review Linux Privileges×

Alerts This Week
Warning Icon 1 492
Alerts This Week
Warning Icon 1 492

SUSE: 2021:1460-1 Critical: Xen DoS Attack Patches Available

suse
Calendar Grey April 30, 2021
Scroller Suse
Prompt security patches introduced for SUSE Xen tackling a range of severe vulnerabilities affecting several corporate applications.
An update that solves three vulnerabilities and has four fixes is now available

Summary

This update for xen fixes the following issues: - CVE-2020-28368: Intel RAPL sidechannel attack aka PLATYPUS attack (bsc#1178591, XSA-351) - CVE-2021-3308: IRQ vector leak on x86 (bsc#1181254, XSA-360) - CVE-2021-28687: HVM soft-reset crashes toolstack (bsc#1183072, XSA-368) - L3: conring size for XEN HV's with huge memory to small (bsc#1177204). - kdump of HVM fails, soft-reset not handled by libxl (bsc#1179148) - openQA job causes libvirtd to dump core when running kdump inside domain (bsc#1181989). - Upstream bug fixes (bsc#1027519) Patch Instructions: To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: - SUSE Manager Server 4.0:

Topics%20covered

Topics Covered

security advisory Denial of Service critical fixes SUSE Linux Enterprise SUSE Manager Server xen patch xen vulnerabilities

References

#1027519 #1177204 #1178591 #1179148 #1181254

#1181989 #1183072

Cross- CVE-2020-28368 CVE-2021-28687 CVE-2021-3308

CVSS scores:

CVE-2020-28368 (NVD) : 4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

CVE-2020-28368 (SUSE): 5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

CVE-2021-3308 (NVD) : 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVE-2021-3308 (SUSE): 5.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H

Affected Products:

SUSE Manager Server 4.0

SUSE Manager Retail Branch Server 4.0

SUSE Manager Proxy 4.0

SUSE Linux Enterprise Server for SAP 15-SP1

SUSE Linux Enterprise Server 15-SP1-LTSS

SUSE Linux Enterprise Server 15-SP1-BCL

SUSE Linux Enterprise High Performance Computing 15-SP1-LTSS

SUSE Linux Enterpr...

Read the Full Advisory

Severity
critical
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2021:1460-1
Rating: important

Topics%20covered

Topics Covered

security advisory Denial of Service critical fixes SUSE Linux Enterprise SUSE Manager Server xen patch xen vulnerabilities

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.