Security Bulletin: IBM Storage Fusion HCI may be vulnerable to Denial of Service via use of golang.org/x/net, x/crypto, and x/text (CVE-2022-30633, CVE-2022-27664, CVE-2022-28131, CVE-2022-41721, CVE-2021-43565, CVE-2022-27191)

Summary

Golang’s x/net, x/crypto and x/text are used by IBM Storage Fusion HCI for networking, cryptography and internationalization. Vulnerabilities in these libraries include Inconsistent Interpretation of HTTP Requests, Uncontrolled Recursion, and Missing Release of Resource that could lead to a denial of service as described in the CVEs listed in the “Vulnerabilities Details” section.

Vulnerability Details

CVEID:CVE-2021-43565
**DESCRIPTION:**Golang Go is vulnerable to a denial of service, caused by an input validation flaw in golang.org/x/crypto’s readCipherPacket() function. By sending an empty plaintext packet to a program linked with golang.org/x/crypto/ssh, a remote attacker could exploit this vulnerability to cause a panic.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/219761 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-2022-27191
**DESCRIPTION:**Go ssh package is vulnerable to a denial of service, caused by an unspecified flaw in certain circumstances involving AddHostKey. By sending a specially-crafted request, a remote attacker could exploit this vulnerability to cause a denial of service.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/222162 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-2022-30633
**DESCRIPTION:**Golang Go is vulnerable to a denial of service, caused by an uncontrolled recursion flaw in Unmarshal in encoding/xml due to stack exhaustion. By parsing a specially-crafted XML document, a remote attacker could exploit this vulnerability to cause a panic.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/233146 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-2022-27664
**DESCRIPTION:**Golang Go is vulnerable to a denial of service, caused by a flaw in net/http. By sending a specially-crafted request, a remote attacker could exploit this vulnerability to cause a closing HTTP/2 server connection to hang, and results in a denial of service condition.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/235355 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-2022-28131
**DESCRIPTION:**Golang Go is vulnerable to a denial of service, caused by an uncontrolled recursion flaw in Decoder.Skip in encoding/xml due to stack exhaustion. By parsing a specially-crafted XML document, a remote attacker could exploit this vulnerability to cause a panic.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/233141 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-2022-41721
**DESCRIPTION:**Golang Go is vulnerable to HTTP request smuggling, caused by a flaw when using MaxBytesHandler. By sending a specially-crafted HTTP(S) transfer-encoding request header, an attacker could exploit this vulnerability to poison the web cache, bypass web application firewall protection, and conduct XSS attacks.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/244775 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)

Affected Products and Versions

Remediation/Fixes

IBM strongly recommends addressing the vulnerability now.

• 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