SUSE update for xen



Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2023-20588
CVE-2023-34322
CWE-ID CWE-369
CWE-399
Exploitation vector Network
Public exploit N/A
Vulnerable software
Server Applications Module
Operating systems & Components / Operating system

Basesystem Module
Operating systems & Components / Operating system

SUSE Linux Enterprise Server for SAP Applications 15
Operating systems & Components / Operating system

SUSE Linux Enterprise Server 15
Operating systems & Components / Operating system

SUSE Linux Enterprise Real Time 15
Operating systems & Components / Operating system

SUSE Linux Enterprise High Performance Computing 15
Operating systems & Components / Operating system

SUSE Linux Enterprise Desktop 15
Operating systems & Components / Operating system

openSUSE Leap
Operating systems & Components / Operating system

xen-libs-64bit
Operating systems & Components / Operating system package or component

xen-libs-64bit-debuginfo
Operating systems & Components / Operating system package or component

xen-tools-xendomains-wait-disk
Operating systems & Components / Operating system package or component

xen-libs-32bit-debuginfo
Operating systems & Components / Operating system package or component

xen-libs-32bit
Operating systems & Components / Operating system package or component

xen-libs-debuginfo
Operating systems & Components / Operating system package or component

xen-debugsource
Operating systems & Components / Operating system package or component

xen-tools-domU
Operating systems & Components / Operating system package or component

xen-libs
Operating systems & Components / Operating system package or component

xen-devel
Operating systems & Components / Operating system package or component

xen-tools-domU-debuginfo
Operating systems & Components / Operating system package or component

xen-tools
Operating systems & Components / Operating system package or component

xen-doc-html
Operating systems & Components / Operating system package or component

xen
Operating systems & Components / Operating system package or component

xen-tools-debuginfo
Operating systems & Components / Operating system package or component

Vendor SUSE

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Division by zero

EUVDB-ID: #VU79239

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-20588

CWE-ID: CWE-369 - Divide By Zero

Exploit availability: No

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to a divide by zero error that can return speculative data. A local user can gain access to potentially sensitive information.

Mitigation

Update the affected package xen to the latest version.

Vulnerable software versions

Server Applications Module: 15-SP5

Basesystem Module: 15-SP5

SUSE Linux Enterprise Server for SAP Applications 15: SP5

SUSE Linux Enterprise Server 15: SP5

SUSE Linux Enterprise Real Time 15: SP5

SUSE Linux Enterprise High Performance Computing 15: SP5

SUSE Linux Enterprise Desktop 15: SP5

openSUSE Leap: 15.5

xen-libs-64bit: before 4.17.2_04-150500.3.9.1

xen-libs-64bit-debuginfo: before 4.17.2_04-150500.3.9.1

xen-tools-xendomains-wait-disk: before 4.17.2_04-150500.3.9.1

xen-libs-32bit-debuginfo: before 4.17.2_04-150500.3.9.1

xen-libs-32bit: before 4.17.2_04-150500.3.9.1

xen-libs-debuginfo: before 4.17.2_04-150500.3.9.1

xen-debugsource: before 4.17.2_04-150500.3.9.1

xen-tools-domU: before 4.17.2_04-150500.3.9.1

xen-libs: before 4.17.2_04-150500.3.9.1

xen-devel: before 4.17.2_04-150500.3.9.1

xen-tools-domU-debuginfo: before 4.17.2_04-150500.3.9.1

xen-tools: before 4.17.2_04-150500.3.9.1

xen-doc-html: before 4.17.2_04-150500.3.9.1

xen: before 4.17.2_04-150500.3.9.1

xen-tools-debuginfo: before 4.17.2_04-150500.3.9.1

CPE2.3 External links

https://www.suse.com/support/update/announcement/2023/suse-su-20233831-1/


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Resource management error

EUVDB-ID: #VU80924

Risk: Low

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-34322

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a malicious guest to escalate privileges on the system.

The vulnerability exists due to improper management of internal resources when running PV guests in shadow paging mode. A malicious guest can run a specially crafted application on the system that causes shortage of memory in the associated with the domain shadow pool and forces Xen to tear down page tables. This can result in memory leak, denial of service or privilege escalation.

The vulnerability can be exploited by 64-bit PV guests on x86 systems.

Mitigation

Update the affected package xen to the latest version.

Vulnerable software versions

Server Applications Module: 15-SP5

Basesystem Module: 15-SP5

SUSE Linux Enterprise Server for SAP Applications 15: SP5

SUSE Linux Enterprise Server 15: SP5

SUSE Linux Enterprise Real Time 15: SP5

SUSE Linux Enterprise High Performance Computing 15: SP5

SUSE Linux Enterprise Desktop 15: SP5

openSUSE Leap: 15.5

xen-libs-64bit: before 4.17.2_04-150500.3.9.1

xen-libs-64bit-debuginfo: before 4.17.2_04-150500.3.9.1

xen-tools-xendomains-wait-disk: before 4.17.2_04-150500.3.9.1

xen-libs-32bit-debuginfo: before 4.17.2_04-150500.3.9.1

xen-libs-32bit: before 4.17.2_04-150500.3.9.1

xen-libs-debuginfo: before 4.17.2_04-150500.3.9.1

xen-debugsource: before 4.17.2_04-150500.3.9.1

xen-tools-domU: before 4.17.2_04-150500.3.9.1

xen-libs: before 4.17.2_04-150500.3.9.1

xen-devel: before 4.17.2_04-150500.3.9.1

xen-tools-domU-debuginfo: before 4.17.2_04-150500.3.9.1

xen-tools: before 4.17.2_04-150500.3.9.1

xen-doc-html: before 4.17.2_04-150500.3.9.1

xen: before 4.17.2_04-150500.3.9.1

xen-tools-debuginfo: before 4.17.2_04-150500.3.9.1

CPE2.3 External links

https://www.suse.com/support/update/announcement/2023/suse-su-20233831-1/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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