PT-2021-13872 · Moodle+1 · Moodle+1

Holme + 1 · Published 2021-03-08 · Updated 2024-03-06 · CVE-2021-20280

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 3.10.2 moodle versions prior to 3.9.5 moodle versions prior to 3.8.8 moodle versions prior to 3.5.17

Description: The issue arises from insufficient sanitizing of text-based feedback answers, leading to stored XSS and blind SSRF risks.

Recommendations: For versions prior to 3.10.2, update to version 3.10.2 or later. For versions prior to 3.9.5, update to version 3.9.5 or later. For versions prior to 3.8.8, update to version 3.8.8 or later. For versions prior to 3.5.17, update to version 3.5.17 or later.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

ALT-PU-2021-1445

ALT-PU-2021-1497

ALT-PU-2022-1641

BIT-MOODLE-2021-20280

CVE-2021-20280

GHSA-X2JP-HH65-4XVF

Affected Products

Alt Linux

Moodle

References · 20

• 🔥 http://packetstormsecurity.com/files/164817/Moodle-Cross-Site-Scripting-Server-Side-Request-Forgery.html · Exploit
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/UFH5DDMU5TZ3JT4Q52WMRAHACA5MHIMT · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-20280 · Security Note
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UFH5DDMU5TZ3JT4Q52WMRAHACA5MHIMT · Vendor Advisory
• https://moodle.org/mod/forum/discuss.php?d=419651 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-moodle-2021-20280 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AFSNJ7XHVTC52RSRX2GBQFF3VEEAY2MS · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FGOMHMYM3WICJ6D6U22Z6LPJGT5A6MZM · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-20280 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/FGOMHMYM3WICJ6D6U22Z6LPJGT5A6MZM · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-20280 · Security Note
• https://ubuntu.com/security/CVE-2021-20280 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-20280 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-x2jp-hh65-4xvf · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/AFSNJ7XHVTC52RSRX2GBQFF3VEEAY2MS · Vendor Advisory