Executive Summary

Informations
Name CVE-2019-19580 First vendor Publication 2019-12-11
Vendor Cve Last vendor Modification 2020-01-03

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 6.6
Base Score 6.6 Environmental Score 6.6
impact SubScore 5.9 Temporal Score 6.6
Exploitabality Sub Score 0.7
 
Attack Vector Network Attack Complexity High
Privileges Required High User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:S/C:P/I:P/A:P)
Cvss Base Score 6 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Medium
Cvss Expoit Score 6.8 Authentication Requires single instance
Calculate full CVSS 2.0 Vectors scores

Detail

An 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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19580

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-362 Race Condition

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 18
Os 1
Os 196

Sources (Detail)

Source Url
BUGTRAQ https://seclists.org/bugtraq/2020/Jan/21
DEBIAN https://www.debian.org/security/2020/dsa-4602
FEDORA https://lists.fedoraproject.org/archives/list/package-announce@lists.fedorapr...
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedorapr...
GENTOO https://security.gentoo.org/glsa/202003-56
MISC https://xenbits.xen.org/xsa/advisory-310.html
SUSE http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00011.html

Alert History

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0
Date Informations
2020-05-23 02:28:41
  • First insertion