CVE-2021-28700

medium

Description

xen/arm: No memory limit for dom0less domUs The dom0less feature allows an administrator to create multiple unprivileged domains directly from Xen. Unfortunately, the memory limit from them is not set. This allow a domain to allocate memory beyond what an administrator originally configured.

References

https://xenbits.xenproject.org/xsa/advisory-383.txt

https://lists.fedoraproject.org/archives/list/[email protected]/message/FZCNPSRPGFCQRYE2BI4D4Q4SCE56ANV2/

https://lists.fedoraproject.org/archives/list/[email protected]/message/LPRVHW4J4ZCPPOHZEWP5MOJT7XDGFFPJ/

https://www.debian.org/security/2021/dsa-4977

https://lists.fedoraproject.org/archives/list/[email protected]/message/2VQCFAPBNGBBAOMJZG6QBREOG5IIDZID/

https://security.gentoo.org/glsa/202208-23

Details

Source: MITRE

Published: 2021-08-27

Updated: 2022-10-28

Type: CWE-770

Risk Information

CVSS v2

Base Score: 6.8

Vector: AV:N/AC:L/Au:S/C:N/I:N/A:C

Impact Score: 6.9

Exploitability Score: 8

Severity: MEDIUM

CVSS v3

Base Score: 4.9

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 1.2

Severity: MEDIUM