Allocation of Resources Without Limits or Throttling Affecting xen package, versions <4.14.1-r0
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Test your applications- Snyk ID SNYK-ALPINE320-XEN-7012406
- published 23 May 2024
- disclosed 15 Dec 2020
Introduced: 15 Dec 2020
CVE-2020-29570 Open this link in a new tabHow to fix?
Upgrade Alpine:3.20 xen to version 4.14.1-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream xen package and not the xen package as distributed by Alpine.
See How to fix? for Alpine:3.20 relevant fixed versions and status.
An issue was discovered in Xen through 4.14.x. Recording of the per-vCPU control block mapping maintained by Xen and that of pointers into the control block is reversed. The consumer assumes, seeing the former initialized, that the latter are also ready for use. Malicious or buggy guest kernels can mount a Denial of Service (DoS) attack affecting the entire system.
References
- https://www.debian.org/security/2020/dsa-4812
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2C6M6S3CIMEBACH6O7V4H2VDANMO6TVA/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OBLV6L6Q24PPQ2CRFXDX4Q76KU776GKI/
- https://xenbits.xenproject.org/xsa/advisory-358.html
- http://www.openwall.com/lists/oss-security/2020/12/16/4
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2C6M6S3CIMEBACH6O7V4H2VDANMO6TVA/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OBLV6L6Q24PPQ2CRFXDX4Q76KU776GKI/
- https://security.gentoo.org/glsa/202107-30