Security Bulletin: IBM Storage Fusion HCI may be vulnerable to Denial of Service via use of openshift/machine-api-operator, openshift/machine-config-operator (CVE-2020-28851, CVE-2020-28852, CVE-2021-44716)

Summary

OpenShift’s machine-api-operator and machine-config-operator are used by IBM Storage Fusion HCI to interact with the OpenShift platform, operators, and custom resource definitions. Vulnerabilities in these libraries include an improper validation of array index and possible uncontrolled resource consumption as described the the CVEs listed in the “Vulnerability Details” section.

Vulnerability Details

CVEID:CVE-2020-28851
**DESCRIPTION:**Golang Go is vulnerable to a denial of service, caused by improper input validation while parsing the -u- extension in language.ParseAcceptLanguage. By sending a specially-crafted HTTP Accept-Language header, a remote attacker could exploit this vulnerability to cause an index out of range panic.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/194162 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)

CVEID:CVE-2020-28852
**DESCRIPTION:**Golang Go is vulnerable to a denial of service, caused by improper input validation while processing a BCP 47 tag in language.ParseAcceptLanguage. By sending a specially-crafted HTTP Accept-Language header, a remote attacker could exploit this vulnerability to cause a slice bounds out of range panic.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/194163 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)

CVEID:CVE-2021-44716
**DESCRIPTION:**Golang Go is vulnerable to a denial of service, caused by an uncontrolled memory consumption in the header canonicalization cache in net/http. By sending HTTP/2 requests, a remote attacker could exploit this vulnerability to consume all available memory resources.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/216553 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

IBM strongly recommends addressing the vulnerability now.

Product|**Version(s)
**|Remediation/Fix/Instructions
—|—|—
IBM Storage Fusion HCI| 2.1.0 - 2.6.1|

• Upgrade to IBM Storage Fusion HCI 2.7.1
• Link to fix: <https://www.ibm.com/support/pages/node/7080125&gt;

Workarounds and Mitigations

None