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Security Bulletin: IBM Security Verify Information Queue does not sufficiently protect its session cookies (CVE-2021-20404)

Security Bulletin


IBM Security Verify Information Queue (ISIQ) does not sufficiently protect its session cookies from malicious modification. Consequently, a denial-of-service attack could cause ISIQ logins to fail with an invalid token. As of v10.0.0, ISIQ has strengthened the safeguards of session cookies.

Vulnerability Details

CVEID:   CVE-2021-20404
DESCRIPTION:   IBM Security Verify Information Queue could allow a user on the network to cause a denial of service due to an invalid cookie value that could prevent future logins.
CVSS Base score: 2.6
CVSS Temporal Score: See: for the current score.
CVSS Vector: (CVSS:3.0/AV:A/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L)

Affected Products and Versions

Affected Product(s)Version(s)
IBM Security Verify Information Queue1.0.6, 1.0.7


Download and install the latest IBM Security Verify Information Queue images (tagged at 10.0.0 or greater) from the Docker Hub repository. The instructions for accessing and deploying the images can be found on the ISIQ starter kit page:

Workarounds and Mitigations

If ISIQ logins are failing due to an invalid session token, try clearing the cookies in your browser to circumvent the problem.

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John Zuccato, Rodney Ryan, Chris Shepherd, Nathan Roane, Vince Dragnea, Troy Fisher, Elaheh Samani, and Gabor Minyo from the IBM X-Force Ethical Hacking Team.

Change History

03 Feb 2021: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.


Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Document Location


[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSCMMF","label":"IBM Security Verify Information Queue"},"Component":"","Platform":[{"code":"PF016","label":"Linux"}],"Version":"1.0.6, 1.0.7","Edition":"","Line of Business":{"code":"LOB24","label":"Security Software"}}]

Document Information

Modified date:
10 February 2021