CVE-2021-36396
HIGHCVSS 7.5/10EPSS 1.43%
Last modified
CVE-2021-36396 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. In Moodle, insufficient redirect handling made it possible to blindly bypass cURL blocked hosts/allowed ports restrictions, resulting in a blind SSRF risk.. EPSS estimates a 1.43% chance of exploitation in the next 30 days.
Description
In Moodle, insufficient redirect handling made it possible to blindly bypass cURL blocked hosts/allowed ports restrictions, resulting in a blind SSRF risk.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Moodle | Moodle | < 3.9.8 |
| Moodle | Moodle | >= 3.10.0, < 3.10.5 |
| Moodle | Moodle | >= 3.11.0, < 3.11.1 |
References
- https://moodle.org/mod/forum/discuss.php?d=424802Patch, Vendor Advisory
- https://moodle.org/mod/forum/discuss.php?d=424802Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-36396?
In Moodle, insufficient redirect handling made it possible to blindly bypass cURL blocked hosts/allowed ports restrictions, resulting in a blind SSRF risk.
How severe is CVE-2021-36396?
CVE-2021-36396 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.43% probability of exploitation in the next 30 days.
How do I fix CVE-2021-36396?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-36396?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST