Security Bulletin: IBM Sterling B2B Integrator vulnerable to multiple vulnerabilities due to CKEditor

Summary

CKEditor is used by IBM Sterling B2B Integrator as part of B2B API. Multiple CKEditor vulnerabilities have been addressed.

Vulnerability Details

CVEID:CVE-2021-26272
**DESCRIPTION:**CKEditor is vulnerable to a denial of service, caused by a regular expression denial of service (ReDoS) flaw in the Autolink plugin. By persuading a victim to paste specially-crafted URL-like text, 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/195667 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-2021-26271
**DESCRIPTION:**CKEditor is vulnerable to a denial of service, caused by a regular expression denial of service (ReDoS) flaw in the Advanced Tab for Dialogs plugin. By persuading a victim to paste specially-crafted text into the Styles input of specific dialogs, 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/195665 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-2020-9281
**DESCRIPTION:**CKEditor is vulnerable to cross-site scripting, caused by improper validation of user-supplied input by the HTML Data Processor. A remote attacker could exploit this vulnerability using a specially crafted protected comment to inject malicious script into a Web page which would be executed in a victim’s Web browser within the security context of the hosting Web site, once the page is viewed. An attacker could use this vulnerability to steal the victim’s cookie-based authentication credentials.
CVSS Base score: 6.1
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/177488 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)

CVEID:CVE-2018-17960
**DESCRIPTION:**CKEditor is vulnerable to cross-site scripting, caused by improper validation of user-supplied input. A remote attacker could exploit this vulnerability using a source-mode paste to inject malicious script into a Web page which would be executed in a victim’s Web browser within the security context of the hosting Web site, once the page is viewed. An attacker could use this vulnerability to steal the victim’s cookie-based authentication credentials.
CVSS Base score: 6.1
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/153156 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)

Affected Products and Versions

Remediation/Fixes

Workarounds and Mitigations

None