CVE-2019-8978

Estado: ModificadaAlta (8.1)—

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.

CVSS

Versión: 3.0
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 8.1

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 5.86%
Percentil entre todas las CVEs puntuadas: 93
Fecha de la puntuación: 5/10/2026

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (2)

Ellucian — Banner Enterprise Identity Services Ellucian — Banner WEB Tailor

CWE

CWE-287, CWE-362

Referencias

JSON original (NVD)

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  "id": "CVE-2019-8978",
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          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
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        "impactScore": 6.4,
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  "published": "2019-05-14T19:29:00.450",
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          "value": "CWE-287"
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          "value": "CWE-362"
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      "value": "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."
    },
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      "lang": "es",
      "value": "Una Vulnerabilidad de identificación incorrecta, puede ser aprovechada a través de una  condición de carrera  que ocurre en Ellucian Banner Web Tailor 8.8.3, 8.8.4, y 8.9 y Banner Enterprise Identity Services 8.3, 8.3.1, 8.3.2, and 8.4, en conjunción  con  SSO Manager. Esta vulnerabilidad permite a los atacantes remotos robar sesiones de las victimas  ( y causar denegación de servicio) Solicitando repetidamente la página inicial Banner Web Tailor con la cookie IDMESSID, configurada para el UDCID de la víctima, la cual en este caso es comprobada en la identificación institucional. Durante el intento de inicio por la víctima, el atacante puede aprovechar esta condición  de carrera y se le emitirá el SESSID que fue destinada para esta víctima."
    }
  ],
  "lastModified": "2026-06-17T02:42:51.450",
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