PT-2023-12115 · Moodle+1 · Moodle+1

Published 2021-03-08 · Updated 2024-10-20 · CVE-2021-27131

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Moodle versions prior to 3.1.2 Moodle version 3.10.1

Description The issue is related to persistent/stored cross-site scripting (XSS) due to improper input sanitization on the Additional HTML Section via Header and Footer parameter in "/admin/settings.php". This could allow an attacker to steal admin and all user account cookies by storing a malicious XSS payload in Header and Footer.

Recommendations For Moodle versions prior to 3.1.2: Update to the latest version to mitigate cross-site scripting risks. For Moodle version 3.10.1: Update to the latest version to mitigate risks. As a temporary workaround, consider restricting access to the Header and Footer parameter in "/admin/settings.php" to minimize the risk of exploitation.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

ALT-PU-2021-1445

ALT-PU-2021-1497

ALT-PU-2022-1641

BIT-MOODLE-2021-27131

CVE-2021-27131

GHSA-W2PM-FR62-JGV4

Affected Products

Alt Linux

Moodle

References · 15

• 🔥 https://github.com/p4nk4jv/CVEs-Assigned/blob/master/Moodle-3.10.1-CVE-2021-27131.md · Exploit
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-27131 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-27131 · Security Note
• https://osv.dev/vulnerability/CVE-2021-27131 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-27131 · Security Note
• https://ubuntu.com/security/CVE-2021-27131 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-moodle-2021-27131 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-w2pm-fr62-jgv4 · Vendor Advisory
• https://github.com/moodle/moodle · Note
• https://twitter.com/transilienceai/status/1847325662056513910 · Twitter Post
• https://docs.moodle.org/402/en/Risks · Note
• https://twitter.com/transilienceai/status/1848052925655859542 · Twitter Post
• https://t.me/cvenotify/51108 · Telegram Post
• https://twitter.com/transilienceai/status/1846962048728813667 · Twitter Post
• https://t.me/cibsecurity/64268 · Telegram Post