CVE-2019-8978

Name: CVE-2019-8978
Creator: NVD / NIST
Published: 2019-05-14T19:29:00.45+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 5.86%

Last modified Jun 17, 2026

CVE-2019-8978 is a vulnerability of currently unknown severity. An improper authentication vulnerability can be exploited through a race condition that occurs in Ellucian Banner Web Tailor 8.8.3, 8.8.4, and 8.9 and Banner Enterprise Identity Services 8.3, 8.3.1, 8.3.2, and 8.4, in conjunction with SSO Manager. This vulnerability allows remote attackers to steal a victim's session (and cause a denial of service) by repeatedly requesting the initial Banner Web Tailor main page with the IDMSESSID cookie set to the victim's UDCID, which in the case tested is the institutional ID. EPSS estimates a 5.86% chance of exploitation in the next 30 days.

Description

An improper authentication vulnerability can be exploited through a race condition that occurs in Ellucian Banner Web Tailor 8.8.3, 8.8.4, and 8.9 and Banner Enterprise Identity Services 8.3, 8.3.1, 8.3.2, and 8.4, in conjunction with SSO Manager. This vulnerability allows remote attackers to steal a victim's session (and cause a denial of service) by repeatedly requesting the initial Banner Web Tailor main page with the IDMSESSID cookie set to the victim's UDCID, which in the case tested is the institutional ID. During a login attempt by a victim, the attacker can leverage the race condition and will be issued the SESSID that was meant for this victim.

Metrics

EPSS Probability

5.86%

92.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Ellucian	Banner Enterprise Identity Services	8.3
Ellucian	Banner Enterprise Identity Services	8.3.1
Ellucian	Banner Enterprise Identity Services	8.3.2
Ellucian	Banner Enterprise Identity Services	8.4
Ellucian	Banner Web Tailor	8.8.3
Ellucian	Banner Web Tailor	8.8.4
Ellucian	Banner Web Tailor	8.9

References

http://packetstormsecurity.com/files/152856/Ellucian-Banner-Web-Tailor-Banner-Enterprise-Identity-Services-Improper-Authentication.htmlThird Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2019/May/18Mailing List, Third Party Advisory
https://ecommunities.ellucian.com/message/252749#252749Permissions Required
https://ecommunities.ellucian.com/message/252810#252810Permissions Required
https://raw.githubusercontent.com/JoshuaMulliken/CVE-2019-8978/master/README.txtThird Party Advisory
https://seclists.org/bugtraq/2019/May/31Mailing List, Third Party Advisory
http://packetstormsecurity.com/files/152856/Ellucian-Banner-Web-Tailor-Banner-Enterprise-Identity-Services-Improper-Authentication.htmlThird Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2019/May/18Mailing List, Third Party Advisory
https://ecommunities.ellucian.com/message/252749#252749Permissions Required
https://ecommunities.ellucian.com/message/252810#252810Permissions Required
https://raw.githubusercontent.com/JoshuaMulliken/CVE-2019-8978/master/README.txtThird Party Advisory
https://seclists.org/bugtraq/2019/May/31Mailing List, Third Party Advisory

Timeline

Published: May 14, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-8978?

How severe is CVE-2019-8978?

Severity scoring for CVE-2019-8978 is pending analysis. The EPSS model estimates a 5.86% probability of exploitation in the next 30 days.

How do I fix CVE-2019-8978?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-8978?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST