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Rewterz Threat Advisory – Multiple IBM Cognos Controller and XML External Vulnerabilities

January 24, 2022

Severity

High

Analysis Summary

CVE-2020-4875; CVE-2020-4876 

IBM Cognos Controller 10.4.0, 10.4.1, and 10.4.2 is vulnerable to an XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources.

CVE-2020-4877 

IBM Cognos Controller 10.4.0, 10.4.1, and 10.4.2 could be vulnerable to unauthorized modifications by using public fields in public classes.

CVE-2020-4879 

IBM Cognos Controller 10.4.0, 10.4.1, and 10.4.2 could allow a remote attacker to bypass security restrictions, caused by improper validation of authentication cookies. 

Impact

  • Exposure of Sensitive Data
  • Privilege Escalation

Affected Vendors

IBM

Affected Products

  • IBM Cognos Controller 10.4.0
  • IBM Cognos Controller 10.4.1
  • IBM Cognos Controller 10.4.2

Remediation

Refer to IBM Security Advisory for patch, upgrade or suggested workaround information.

https://www.ibm.com/support/pages/node/6509856

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  • Transform
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