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Vulnerability Details : CVE-2019-19580

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.
Publish Date : 2019-12-11 Last Update Date : 2020-01-03
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- CVSS Scores & Vulnerability Types

CVSS Score
6.0
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication ???
Gained Access None
Vulnerability Type(s) Gain privileges
CWE ID 362

- Products Affected By CVE-2019-19580

# Product Type Vendor Product Version Update Edition Language
1 OS Fedoraproject Fedora 31 * * * Version Details Vulnerabilities
2 OS XEN XEN * * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Fedoraproject Fedora 1
XEN XEN 1

- References For CVE-2019-19580

https://seclists.org/bugtraq/2020/Jan/21
BUGTRAQ 20200114 [SECURITY] [DSA 4602-1] xen security update
https://www.debian.org/security/2020/dsa-4602
DEBIAN DSA-4602
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00011.html
SUSE openSUSE-SU-2020:0011
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/34HBFTYNMQMWIO2GGK7DB6KV4M6R5YPV/
FEDORA FEDORA-2019-2e12bd3a9a
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/D5R73AYE53QA32KTMHUVKCX6E52CIS43/
FEDORA FEDORA-2019-6aad703290
https://xenbits.xen.org/xsa/advisory-310.html
https://security.gentoo.org/glsa/202003-56
GENTOO GLSA-202003-56

- Metasploit Modules Related To CVE-2019-19580

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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