## Summary

IBM CICS TX Standard is vulnerable to multiple vulnerabilities in Golang Go and Kubernetes. The fix removes these vulnerabilities from IBM CICS TX Standard.

## Vulnerability Details

** CVEID: **[CVE-2018-17847]()
** DESCRIPTION: **Golang Go is vulnerable to a denial of service, caused by an index out of range flaw during an html.Parse call in the html package. By sending a specially-crafted request, a remote attacker could exploit this vulnerability to cause a denial of service condition.
CVSS Base score: 7.5
CVSS Temporal Score: See: [ https://exchange.xforce.ibmcloud.com/vulnerabilities/150632]() 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-2020-8559]()
** DESCRIPTION: **Kubernetes kube-apiserver could allow a remote authenticated attacker to gain elevated privileges on the system, caused by a flaw when multiple clusters share the same certificate authority trusted by the client. By intercepting certain requests and sending a redirect response, an attacker could exploit this vulnerability to compromise other nodes.
CVSS Base score: 6.4
CVSS Temporal Score: See: [ https://exchange.xforce.ibmcloud.com/vulnerabilities/185302]() for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H)

** CVEID: **[CVE-2019-11253]()
** DESCRIPTION: **The Kubernetes API server is vulnerable to a denial of service, caused by a billion laughs attack, caused by an error when parsing YAML manifests. A remote attacker could exploit this vulnerability to cause a denial of service condition.
CVSS Base score: 7.5
CVSS Temporal Score: See: [ https://exchange.xforce.ibmcloud.com/vulnerabilities/168618]() 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-2021-33194]()
** DESCRIPTION: **Golang Go is vulnerable to a denial of service, caused by an infinite loop in golang.org/x/net/html. By sending a specially-crafted ParseFragment input, a remote attacker could exploit this vulnerability to cause a denial of service condition.
CVSS Base score: 7.5
CVSS Temporal Score: See: [ https://exchange.xforce.ibmcloud.com/vulnerabilities/202644]() 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-2018-17848]()
** DESCRIPTION: **Golang Go is vulnerable to a denial of service, caused by an index out of range flaw during an html.Parse call in the html package. By sending a specially-crafted request, a remote attacker could exploit this vulnerability to cause a denial of service condition.
CVSS Base score: 7.5
CVSS Temporal Score: See: [ https://exchange.xforce.ibmcloud.com/vulnerabilities/150633]() 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-2018-17846]()
** DESCRIPTION: **Golang Go is vulnerable to a denial of service, caused by an error during an html.Parse call in the html package. By sending a specially-crafted request, a remote attacker could exploit this vulnerability to cause the application to enter into an infinite loop.
CVSS Base score: 7.5
CVSS Temporal Score: See: [ https://exchange.xforce.ibmcloud.com/vulnerabilities/150630]() 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-2019-11254]()
** DESCRIPTION: **Kubernetes is vulnerable to a denial of service, caused by a flaw in kube-apiserver. By sending a specially-crafted request using YAML payloads, a remote authenticated attacker could exploit this vulnerability to consume excessive CPU cycles.
CVSS Base score: 7.5
CVSS Temporal Score: See: [ https://exchange.xforce.ibmcloud.com/vulnerabilities/178935]() 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

Affected Product(s)| Version(s)
—|—
IBM CICS TX Standard| 11.1

## Remediation/Fixes

IBM strongly recommends addressing the vulnerabilities by downloading and applying the interim fix from the table below.

Product

|

Version

|

Defect

|

Remediation / First Fix

—|—|—|—

IBM CICS TX Standard

|

11.1

|

127799

|

[Download the fix from here]( “Download the fix from here” )

## Workarounds and Mitigations

None

##Read More