PT-2019-8928 · Blackboard · Blackboard Learn

Published 2019-11-18 · Updated 2019-11-25 · CVE-2018-13257

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Blackboard Learn version 2018-07-02

Description The issue concerns HTTP host header spoofing during Central Authentication Service (CAS) service ticket validation in the bb-auth-provider-cas authentication module. This allows for a phishing attack from the CAS server login page.

Recommendations For Blackboard Learn version 2018-07-02, consider restricting access to the bb-auth-provider-cas authentication module until a fix is available. As a temporary workaround, restrict the use of the CAS service ticket validation to minimize the risk of exploitation.

Exploit

Fix

Open Redirect

Weakness Enumeration

CWE-601

Related Identifiers

CVE-2018-13257

Affected Products

Blackboard Learn

References · 3

• 🔥 https://github.com/gluxon/CVE-2018-13257 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2018-13257 · Security Note
• https://osv.dev/vulnerability/CVE-2018-13257 · Vendor Advisory