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

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

Remediation/Fixes

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

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