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HistoryMar 29, 2023 - 7:03 p.m.

Security Bulletin: CVE-2022-27664, CVE-2022-21698, CVE-2021-43565 and CVE-2022-27191 may affect IBM CICS TX Standard

2023-03-2919:03:37
www.ibm.com
50
ibm cics tx standard
multiple cves
go lang
denial of service

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

AI Score

9

Confidence

High

EPSS

0.008

Percentile

81.9%

Summary

Multiple CVEs CVE-2022-27664, CVE-2022-21698, CVE-2021-43565 and CVE-2022-27191 may affect IBM CICS TX Standard. IBM CICS TX Standard has addressed the applicable CVEs. Relevant Go related packages have been upgraded.

Vulnerability Details

**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-2022-21698 DESCRIPTION: Prometheus Go client library (client_golang ) is vulnerable to a denial of service, caused by a flaw when handling requests with non-standard HTTP methods. By sending specially-crafted HTTP requests, a remote attacker could exploit this vulnerability to cause a memory exhaustion.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/219707 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-2021-43565 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)

Affected Products and Versions

Affected Product Version
IBM CICS TX Standard 11.1

Remediation/Fixes

Product Version Platform Remediation/Fix
IBM CICS TX Standard 11.1 Linux Fix Central Link

Workarounds and Mitigations

None

Affected configurations

Vulners
Node
ibmcics_txMatch11.1standard
VendorProductVersionCPE
ibmcics_tx11.1cpe:2.3:a:ibm:cics_tx:11.1:*:*:*:standard:*:*:*

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

AI Score

9

Confidence

High

EPSS

0.008

Percentile

81.9%