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CVE-2021-25316— Local DoS of VM live migration due to use of static tmp files in detach_disks.sh in s390-tools

Quick assessment

Affected
SUSE SUSE Linux Enterprise Server 12-SP5
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Fabrice Fontaine s390-tools 是 （Fabrice Fontaine）开源的一个应用软件。提供s390 Linux内核和设备驱动程序一起使用的用户空间实用程序的源树。 s390-tools 存在安全漏洞，攻击者可利用该漏洞可以创建一个符号链接，以改变指向的文件。

CVSS 3.3 · Low EPSS 0.32% · P22

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-25316

Vulnerability Information
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Vulnerability Title
Local DoS of VM live migration due to use of static tmp files in detach_disks.sh in s390-tools
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
不安全的临时文件
Source: CVE Program / CVE List V5
Vulnerability Title
s390-tools 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Fabrice Fontaine s390-tools 是 （Fabrice Fontaine）开源的一个应用软件。提供s390 Linux内核和设备驱动程序一起使用的用户空间实用程序的源树。 s390-tools 存在安全漏洞，攻击者可利用该漏洞可以创建一个符号链接，以改变指向的文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
SUSE SUSE Linux Enterprise Server 12-SP5 s390-tools ~ 2.1.0-18.29.1 -
SUSE SUSE Linux Enterprise Server 15-SP2 s390-tools ~ 2.11.0-9.20.1 -

II. Public POCs for CVE-2021-25316

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III. Intelligence Information for CVE-2021-25316

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Vendor Advisories for CVE-2021-25316 (1)

IV. Related Vulnerabilities

Same product: SUSE Linux Enterprise Server 12-SP5
Same vendor: SUSE
Same weakness: CWE-377

V. Comments for CVE-2021-25316

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