Input validation error in Xen - CVE-2023-46842

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Main Vulnerability Database Vulnerabilities #VU88228

Input validation error in Xen - CVE-2023-46842

Published: April 9, 2024


Vulnerability identifier: #VU88228
CSH Severity: Medium
CVSS v4 BT: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2023-46842
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a malicious guest to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of register values when invoking a hypercall. A malicious HVM or PVH guest can pass specially crafted input to the hypervisor and perform a denial of service (DoS) attack.


Affected software

Xen
Citrix Hypervisor
Debian Linux
Gentoo Linux
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Software Development Kit 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Micro for Rancher
openSUSE Leap Micro
SUSE Linux Enterprise High Performance Computing 15 SP2 LTSS
SUSE Linux Enterprise Server 15 SP2 LTSS
Basesystem Module
Server Applications Module
openSUSE Leap
Fedora
Citrix XenServer
xen-tools-domU
xen-tools-domU-debuginfo
xen-libs
xen-tools-debuginfo
xen-libs-debuginfo-32bit
xen
xen-debugsource
xen-devel
xen-libs-debuginfo
xen-tools
xen-doc-html
xen-libs-32bit
xen-tools-xendomains-wait-disk
xen-libs-64bit-debuginfo
xen-libs-64bit
xen-libs-32bit-debuginfo
app-emulation/xen
xen (Debian package)
EMC Cloud Tiering Appliance

How to mitigate CVE-2023-46842

Install updates from vendor's website.

Citrix Hypervisor - update to XS82ECU1062
xen-tools-domU - addressed in versions 4.12.4_48-3.109.1, 4.13.5_12-150200.3.93.1, 4.14.6_14-150300.3.72.1, 4.16.6_02-150400.4.55.1, 4.17.4_02-150500.3.30.1, 4.17.4_04-150500.3.33.1, 4.18.2_06-150600.3.3.1
xen-tools-domU-debuginfo - addressed in versions 4.12.4_48-3.109.1, 4.13.5_12-150200.3.93.1, 4.14.6_14-150300.3.72.1, 4.16.6_02-150400.4.55.1, 4.17.4_02-150500.3.30.1, 4.17.4_04-150500.3.33.1, 4.18.2_06-150600.3.3.1
xen-libs - addressed in versions 4.12.4_48-3.109.1, 4.13.5_12-150200.3.93.1, 4.14.6_14-150300.3.72.1, 4.16.6_02-150400.4.55.1, 4.17.4_02-150500.3.30.1, 4.17.4_04-150500.3.33.1, 4.18.2_06-150600.3.3.1
xen-tools-debuginfo - addressed in versions 4.12.4_48-3.109.1, 4.13.5_12-150200.3.93.1, 4.14.6_14-150300.3.72.1, 4.16.6_02-150400.4.55.1, 4.17.4_02-150500.3.30.1, 4.17.4_04-150500.3.33.1, 4.18.2_06-150600.3.3.1
xen-libs-debuginfo-32bit - update to 4.12.4_48-3.109.1
xen - addressed in versions 4.12.4_48-3.109.1, 4.13.5_12-150200.3.93.1, 4.14.6_14-150300.3.72.1, 4.16.6_02-150400.4.55.1, 4.17.4_02-150500.3.30.1, 4.17.4_04-150500.3.33.1, 4.18.2_06-150600.3.3.1
xen-debugsource - addressed in versions 4.12.4_48-3.109.1, 4.13.5_12-150200.3.93.1, 4.14.6_14-150300.3.72.1, 4.16.6_02-150400.4.55.1, 4.17.4_02-150500.3.30.1, 4.17.4_04-150500.3.33.1, 4.18.2_06-150600.3.3.1
xen-devel - addressed in versions 4.12.4_48-3.109.1, 4.13.5_12-150200.3.93.1, 4.14.6_14-150300.3.72.1, 4.16.6_02-150400.4.55.1, 4.17.4_02-150500.3.30.1, 4.17.4_04-150500.3.33.1, 4.18.2_06-150600.3.3.1
xen-libs-debuginfo - addressed in versions 4.12.4_48-3.109.1, 4.13.5_12-150200.3.93.1, 4.14.6_14-150300.3.72.1, 4.16.6_02-150400.4.55.1, 4.17.4_02-150500.3.30.1, 4.17.4_04-150500.3.33.1, 4.18.2_06-150600.3.3.1
xen-tools - addressed in versions 4.12.4_48-3.109.1, 4.13.5_12-150200.3.93.1, 4.14.6_14-150300.3.72.1, 4.16.6_02-150400.4.55.1, 4.17.4_02-150500.3.30.1, 4.17.4_04-150500.3.33.1, 4.18.2_06-150600.3.3.1
xen-doc-html - addressed in versions 4.12.4_48-3.109.1, 4.14.6_14-150300.3.72.1, 4.16.6_02-150400.4.55.1, 4.17.4_02-150500.3.30.1, 4.17.4_04-150500.3.33.1, 4.18.2_06-150600.3.3.1
xen-libs-32bit - addressed in versions 4.12.4_48-3.109.1, 4.14.6_14-150300.3.72.1, 4.16.6_02-150400.4.55.1, 4.17.4_02-150500.3.30.1, 4.17.4_04-150500.3.33.1, 4.18.2_06-150600.3.3.1
xen-tools-xendomains-wait-disk - addressed in versions 4.13.5_12-150200.3.93.1, 4.14.6_14-150300.3.72.1, 4.16.6_02-150400.4.55.1, 4.17.4_02-150500.3.30.1, 4.17.4_04-150500.3.33.1, 4.18.2_06-150600.3.3.1
xen-libs-64bit-debuginfo - addressed in versions 4.14.6_14-150300.3.72.1, 4.16.6_02-150400.4.55.1, 4.17.4_02-150500.3.30.1, 4.17.4_04-150500.3.33.1, 4.18.2_06-150600.3.3.1
xen-libs-64bit - addressed in versions 4.14.6_14-150300.3.72.1, 4.16.6_02-150400.4.55.1, 4.17.4_02-150500.3.30.1, 4.17.4_04-150500.3.33.1, 4.18.2_06-150600.3.3.1
xen-libs-32bit-debuginfo - addressed in versions 4.14.6_14-150300.3.72.1, 4.16.6_02-150400.4.55.1, 4.17.4_02-150500.3.30.1, 4.17.4_04-150500.3.33.1, 4.18.2_06-150600.3.3.1
app-emulation/xen - update to 4.17.4
xen - addressed in versions 4.17.4-1.fc38, 4.17.4-1.fc39, 4.18.2-1.fc40
xen (Debian package) - update to 4.17.5+23-ga4e5191dc0-1
EMC Cloud Tiering Appliance - update to 13.2.0.2.31

External References

Related Security Bulletins