CVE-2020-11067

HIGHCVSS 8.8/10EPSS 1.99%

Last modified

CVE-2020-11067 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. In TYPO3 CMS 9.0.0 through 9.5.16 and 10.0.0 through 10.4.1, it has been discovered that backend user settings (in $BE_USER->uc) are vulnerable to insecure deserialization. In combination with vulnerabilities of third party components, this can lead to remote code execution. EPSS estimates a 1.99% chance of exploitation in the next 30 days.

Description

In TYPO3 CMS 9.0.0 through 9.5.16 and 10.0.0 through 10.4.1, it has been discovered that backend user settings (in $BE_USER->uc) are vulnerable to insecure deserialization. In combination with vulnerabilities of third party components, this can lead to remote code execution. A valid backend user account is needed to exploit this vulnerability. This has been fixed in 9.5.17 and 10.4.2.

Metrics

CVSS 3.1
8.8/10

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

EPSS Probability
1.99%

78.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Typo3Typo3>= 9.0.0, <= 9.5.16
Typo3Typo3>= 10.0.0, <= 10.4.1

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-11067?
In TYPO3 CMS 9.0.0 through 9.5.16 and 10.0.0 through 10.4.1, it has been discovered that backend user settings (in $BE_USER->uc) are vulnerable to insecure deserialization. In combination with vulnerabilities of third party components, this can lead to remote code execution. A valid backend user account is needed to exploit this vulnerability. This has been fixed in 9.5.17 and 10.4.2.
How severe is CVE-2020-11067?
CVE-2020-11067 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.99% probability of exploitation in the next 30 days.
How do I fix CVE-2020-11067?
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-2020-11067?

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

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Source: NVD / NIST