CVE-2021-25316 Local DoS of VM live migration due to use of static tmp files in detach_disks.sh in s390-tools
Local attackers can prevent VM live migrations by exploiting insecure temporary files in the detach_disks.sh script within s390-tools.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-25316?
CVE-2021-25316 is a low-severity vulnerability in SUSE Linux Enterprise Server 12-SP5, published on 14 Apr 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A Insecure Temporary File vulnerability in s390-tools of SUSE Linux Enterprise Server 12-SP5, SUSE Linux Enterprise Server 15-SP2 allows local attackers to prevent VM live migrations This issue affects: SUSE Linux Enterprise Server 12-SP5 s390-tools versions prior to 2.1.0-18.29.1. SUSE Linux Enterprise Server 15-SP2 s390-tools versions prior to 2.11.0-9.20.1.
Weakness: CWE-377
Which versions are affected by CVE-2021-25316?
It affects 1 product.
Linux distribution packages (4)
s390-tools SUSE:Linux Enterprise Module for Basesystem 15 SP2 | All versions | 2.11.0-9.20.1 |
s390-tools SUSE:Linux Enterprise Server 12 SP5 | All versions | 2.1.0-18.29.1 |
s390-tools SUSE:Linux Enterprise Server for SAP Applications 12 SP5 | All versions | 2.1.0-18.29.1 |
s390-tools openSUSE:Tumbleweed | All versions | 2.30.0-1.1 |
Products include Suse S390-Tools.
How do I fix CVE-2021-25316?
Apply the vendor's patch.
Is CVE-2021-25316 being exploited?
There is no known exploitation of CVE-2021-25316 in the wild and no public exploit code.
Sources
Also known as GHSA-xww5-ggv5-g549, SUSE-SU-2021:0776-1, SUSE-SU-2021:0777-1, openSUSE-SU-2024:13514-1.