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CVE-2020-25599

Description

An issue was discovered in Xen through 4.14.x. There are evtchn_reset() race conditions. Uses of EVTCHNOP_reset (potentially by a guest on itself) or XEN_DOMCTL_soft_reset (by itself covered by XSA-77) can lead to the violation of various internal assumptions. This may lead to out of bounds memory accesses or triggering of bug checks. In particular, x86 PV guests may be able to elevate their privilege to that of the host. Host and guest crashes are also possible, leading to a Denial of Service (DoS). Information leaks cannot be ruled out. All Xen versions from 4.5 onwards are vulnerable. Xen versions 4.4 and earlier are not vulnerable.

Risk Information

Base Score
7.0
MODERATE
Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score
Exploitation Probability
0.074

Associated Vulnerability

VulnerabilityOS Platform
SUSE-SU-2020:2788-1(SUSE Linux Enterprise Server 12-SP5 ) xen-4.12.3_08-3.24.1.x86_64.rpmLinux
SUSE-SU-2020:2788-1(SUSE Linux Enterprise Server 12-SP5 ) xen-debugsource-4.12.3_08-3.24.1.x86_64.rpmLinux
SUSE-SU-2020:2788-1(SUSE Linux Enterprise Server 12-SP5 ) xen-doc-html-4.12.3_08-3.24.1.x86_64.rpmLinux
SUSE-SU-2020:2788-1(SUSE Linux Enterprise Server 12-SP5 ) xen-libs-4.12.3_08-3.24.1.x86_64.rpmLinux
SUSE-SU-2020:2788-1(SUSE Linux Enterprise Server 12-SP5 ) xen-libs-32bit-4.12.3_08-3.24.1.x86_64.rpmLinux
SUSE-SU-2020:2788-1(SUSE Linux Enterprise Server 12-SP5 ) xen-libs-debuginfo-4.12.3_08-3.24.1.x86_64.rpmLinux
SUSE-SU-2020:2788-1(SUSE Linux Enterprise Server 12-SP5 ) xen-libs-debuginfo-32bit-4.12.3_08-3.24.1.x86_64.rpmLinux
SUSE-SU-2020:2788-1(SUSE Linux Enterprise Server 12-SP5 ) xen-tools-4.12.3_08-3.24.1.x86_64.rpmLinux
SUSE-SU-2020:2788-1(SUSE Linux Enterprise Server 12-SP5 ) xen-tools-debuginfo-4.12.3_08-3.24.1.x86_64.rpmLinux
SUSE-SU-2020:2788-1(SUSE Linux Enterprise Server 12-SP5 ) xen-tools-domU-4.12.3_08-3.24.1.x86_64.rpmLinux
SUSE-SU-2020:2788-1(SUSE Linux Enterprise Server 12-SP5 ) xen-tools-domU-debuginfo-4.12.3_08-3.24.1.x86_64.rpmLinux
Public headers and libs for Xen (USN-5617-1) libxenevtchn1_4.11.3+24-g14b62ab3e5-1ubuntu2.3_amd64.debLinux
Public headers and libs for Xen (USN-5617-1) libxengnttab1_4.11.3+24-g14b62ab3e5-1ubuntu2.3_amd64.debLinux
Public headers and libs for Xen (USN-5617-1) libxenmisc4.11_4.11.3+24-g14b62ab3e5-1ubuntu2.3_amd64.debLinux
Public headers and libs for Xen (USN-5617-1) xen-utils-4.11_4.11.3+24-g14b62ab3e5-1ubuntu2.3_amd64.debLinux
Public headers and libs for Xen (USN-5617-1) xenstore-utils_4.11.3+24-g14b62ab3e5-1ubuntu2.3_amd64.debLinux
Public headers and libs for Xen (USN-5617-1) xen-utils-common_4.11.3+24-g14b62ab3e5-1ubuntu2.3_amd64.debLinux
Public headers and libs for Xen (USN-5617-1) libxendevicemodel1_4.11.3+24-g14b62ab3e5-1ubuntu2.3_amd64.debLinux
Public headers and libs for Xen (USN-5617-1) xen-hypervisor-4.11-amd64_4.11.3+24-g14b62ab3e5-1ubuntu2.3_amd64.debLinux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234