PT-2021-22898 · Gibbon · Gibbon

Brian Lowe · Published 2021-09-03 · Updated 2021-09-07 · CVE-2021-40492

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 Gibbon version 22

Description A reflected XSS issue exists in multiple pages of the Gibbon application, allowing for arbitrary execution of JavaScript. This is achieved by manipulating parameters such as gibbonCourseClassID, gibbonPersonID, subpage, currentDate, or allStudents in the index.php page.

Recommendations For version 22, consider disabling the execution of JavaScript in the affected pages as a temporary workaround until a patch is available. Restrict access to the index.php page to minimize the risk of exploitation. Avoid using the parameters gibbonCourseClassID, gibbonPersonID, subpage, currentDate, or allStudents in the affected API endpoint until the issue is resolved.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-40492

Affected Products

Gibbon

References · 6

• 🔥 https://github.com/5qu1n7/CVE-2021-40492 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-40492 · Security Note
• https://osv.dev/vulnerability/CVE-2021-40492 · Vendor Advisory
• https://gibbonedu.org · Vendor Advisory
• https://t.me/cibsecurity/28266 · Telegram Post
• https://t.me/cvenotify/20646 · Telegram Post