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.
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
GitHub 1 repository
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SecKatie/CVE-2019-8978 ★ 9 · May 10, 2019
Banner Web Tailor and Banner Enterprise Identity Services Vulnerability Disclosure
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 20190513 [CVE-2019-8978] Improper Authentication (CWE-287) in Ellucian Banner Web Tailor and Banner Enterprise Identity Services mailing-list
- http://packetstormsecurity.com/files/152856/Ellucian-Banner-Web-Tailor-Banner-Enterprise-Identity-Services-Improper-Authentication.html
- 20190514 [CVE-2019-8978] Improper Authentication (CWE-287) in Ellucian Banner Web Tailor and Banner Enterprise Identity Services mailing-list
- https://raw.githubusercontent.com/JoshuaMulliken/CVE-2019-8978/master/README.txt
- https://ecommunities.ellucian.com/message/252749#252749
- https://ecommunities.ellucian.com/message/252810#252810