CVE-2019-19580

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Summary

CVECVE-2019-19580
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-12-11 18:16:00 UTC
Updated2023-11-07 03:07:00 UTC
DescriptionAn issue was discovered in Xen through 4.12.x allowing x86 PV guest OS users to gain host OS privileges by leveraging race conditions in pagetable promotion and demotion operations, because of an incomplete fix for CVE-2019-18421. XSA-299 addressed several critical issues in restartable PV type change operations. Despite extensive testing and auditing, some corner cases were missed. A malicious PV guest administrator may be able to escalate their privilege to that of the host. All security-supported versions of Xen are vulnerable. Only x86 systems are affected. Arm systems are not affected. Only x86 PV guests can leverage the vulnerability. x86 HVM and PVH guests cannot leverage the vulnerability. Note that these attacks require very precise timing, which may be difficult to exploit in practice.

Risk And Classification

Problem Types: CWE-362

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Fedoraproject Fedora 31 All All All
Operating System Fedoraproject Fedora 31 All All All
Operating System Xen Xen All All All All

References

ReferenceSourceLinkTags
Debian -- Security Information -- DSA-4602-1 xen DEBIAN www.debian.org
Xen: Multiple vulnerabilities (GLSA 202003-56) — Gentoo security GENTOO security.gentoo.org
[SECURITY] Fedora 31 Update: xen-4.12.1-8.fc31 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org Third Party Advisory
[SECURITY] Fedora 30 Update: xen-4.11.3-2.fc30 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
[SECURITY] Fedora 31 Update: xen-4.12.1-8.fc31 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[security-announce] openSUSE-SU-2020:0011-1: important: Security update SUSE lists.opensuse.org
XSA-310 - Xen Security Advisories MISC xenbits.xen.org Patch, Vendor Advisory
Bugtraq: [SECURITY] [DSA 4602-1] xen security update BUGTRAQ seclists.org
[SECURITY] Fedora 30 Update: xen-4.11.3-2.fc30 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 378871 Citrix XenServer Security Updates (CTX266932)
  • 500754 Alpine Linux Security Update for xen
  • 504531 Alpine Linux Security Update for xen
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