What is CVE-2021-20450?

CVE-2021-20450 is a medium-severity vulnerability in IBM Cognos Controller, classified under Reliance on Cookies without Validation and Integrity Checking. CVSS score: 4.3/10. Published 2024-05-03.

How severe is CVE-2021-20450?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Is CVE-2021-20450 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in IBM Cognos Controller

CVE-2021-20450

IBM Cognos Controller 10.4.1, 10.4.2, and 11.0.0 does not set the secure attribute on authorization tokens or session cookies. Attackers may be able to get the cookie values by sending a http:// link to a user or by planting this link in a site the user goes to. The cookie will be sent to the insecure link and the attacker can then obtain the cookie value by snooping the traffic. IBM X-Force ID: 196640.

EPSS: 0.004 (29.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.

Affected products

Ibm Cognos Controller — versions 10.4.1, 10.4.2, 11.0.0
Ibm Cognos_controller — versions 10.4.1, 10.4.2, 11.0.0

Weakness classification (CWE)

CWE-565 — Reliance on Cookies without Validation and Integrity Checking

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

psirt@us.ibm.com (vendor-advisory, Vendor Advisory)
psirt@us.ibm.com (vdb-entry, Vendor Advisory)

Frequently asked questions

What is CVE-2021-20450?: CVE-2021-20450 is a medium-severity vulnerability in IBM Cognos Controller, classified under Reliance on Cookies without Validation and Integrity Checking. CVSS score: 4.3/10. Published 2024-05-03.
How severe is CVE-2021-20450?: Medium severity. CVSS v3 base score is 4.3 out of 10.
Is CVE-2021-20450 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.