Published: 08/10/2019 Updated: 03/02/2023

CVSS v2 Base Score: 4.6 | Impact Score: 6.4 | Exploitability Score: 3.9

CVSS v3 Base Score: 7.8 | Impact Score: 5.9 | Exploitability Score: 1.8

VMScore: 409

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

An issue exists in Xen up to and including 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges because a guest can manipulate its virtualised %cr4 in a way that is incompatible with Linux (and possibly other guest kernels).

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xen xen
debian debian linux 9.0
debian debian linux 10.0

Multiple vulnerabilities have been discovered in the Xen hypervisor, which could result in denial of service, guest-to-host privilege escalation or information leaks In addition this update provides mitigations for the TSX Asynchronous Abort speculative side channel attack For additional information please refer to xenbitsxenorg/xsa/adv ...

CWE-20 https://xenbits.xen.org/xsa/advisory-293.html http://www.openwall.com/lists/oss-security/2019/10/25/8 http://xenbits.xen.org/xsa/advisory-293.html https://www.debian.org/security/2020/dsa-4602 https://seclists.org/bugtraq/2020/Jan/21 https://nvd.nist.gov https://www.debian.org/security/2020/dsa-4602

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CVE-2019-17347

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