IBM Support

Security Bulletin: IBM Flex System switch firmware products are affected by vulnerabilities in Libxml2

Security Bulletin


Summary

The following vulnerabilites in Libxml2 have been addressed by IBM Flex System switch firmware products.

Vulnerability Details

CVEID:   CVE-2021-3517
DESCRIPTION:   GNOME libxml2 is vulnerable to a heap-based buffer overflow, caused by improper bounds checking by xmlEncodeEntitiesInternal() in entities.c. By sending a specially crafted file, a remote attacker could trigger an out-of-bounds read and execute arbitrary code on the system or cause a denial of service.
CVSS Base score: 8.6
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/202526 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H)

CVEID:   CVE-2021-3537
DESCRIPTION:   GNOME libxml2 is vulnerable to a denial of service, caused by a NULL pointer dereference flaw when parsing XML mixed content in recovery mode and post-validated. A remote attacker could exploit this vulnerability to cause the application to crash.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/203084 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

Affected ProductVersion
IBM Flex System EN2092 1Gb Ethernet Scalable Switch7.8
IBM Flex System Fabric SI4093 GbFSIM 10Gb Scalable Switch7.8
IBM Flex System Fabric EN4093/EN4093R 10Gb Scalable Switch7.8
IBM Flex System CN4093 10Gb Converged Scalable Switch7.8

Remediation/Fixes

Firmware fix versions are available on Fix Central: http://www.ibm.com/support/fixcentral/

ProductFix Version

IBM Flex System EN2092 1Gb Ethernet Scalable Switch firmware

(ibm_fw_scsw_en2092-7.8.31.0_anyos_noarch)

7.8.31.0

IBM Flex System Fabric SI4093 System Interconnect Module firmware

(ibm_fw_scsw_si4093-7.8.31.0_anyos_noarch)

7.8.31.0

IBM Flex System Fabric EN4093/EN4093R 10Gb Scalable Switch firmware

(ibm_fw_scsw_en4093r-7.8.31.0_anyos_noarch)

7.8.31.0

IBM Flex System CN4093 10Gb Converged Scalable Switch firmware

(ibm_fw_scsw_cn4093-7.8.31.0_anyos_noarch)

7.8.31.0

 

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

Subscribe to My Notifications to be notified of important product support alerts like this.

References

Complete CVSS v3 Guide
On-line Calculator v3

Off

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Lenovo Product Security Advisories

Change History

28 Feb 2022: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Document Location

Worldwide

[{"Business Unit":{"code":"BU050","label":"BU NOT IDENTIFIED"},"Product":{"code":"SSWLYD","label":"PureFlex System \u0026 Flex System"},"Component":"Switch software","Platform":[{"code":"PF009","label":"Firmware"}],"Version":"All","Edition":""}]

Document Information

Modified date:
28 February 2022

UID

ibm16560160

Page Feedback