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CVE-2023-35133

HIGHCVSS 7.5/10EPSS 0.83%

Last modified

CVE-2023-35133 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An issue in the logic used to check 0.0.0.0 against the cURL blocked hosts lists resulted in an SSRF risk. This flaw affects Moodle versions 4.2, 4.1 to 4.1.3, 4.0 to 4.0.8, 3.11 to 3.11.14, 3.9 to 3.9.21 and earlier unsupported versions.. EPSS estimates a 0.83% chance of exploitation in the next 30 days.

Description

An issue in the logic used to check 0.0.0.0 against the cURL blocked hosts lists resulted in an SSRF risk. This flaw affects Moodle versions 4.2, 4.1 to 4.1.3, 4.0 to 4.0.8, 3.11 to 3.11.14, 3.9 to 3.9.21 and earlier unsupported versions.

Metrics

CVSS 3.1
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability
0.83%

52.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
MoodleMoodle< 3.9.22
MoodleMoodle>= 3.11.0, < 3.11.15
MoodleMoodle>= 4.0.0, < 4.0.9
MoodleMoodle>= 4.1.0, < 4.1.4
MoodleMoodle4.2.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2023-35133?
An issue in the logic used to check 0.0.0.0 against the cURL blocked hosts lists resulted in an SSRF risk. This flaw affects Moodle versions 4.2, 4.1 to 4.1.3, 4.0 to 4.0.8, 3.11 to 3.11.14, 3.9 to 3.9.21 and earlier unsupported versions.
How severe is CVE-2023-35133?
CVE-2023-35133 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.83% probability of exploitation in the next 30 days.
How do I fix CVE-2023-35133?
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-2023-35133?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST