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CVE-2020-15098

8.8 · HIGH

In TYPO3 CMS greater than or equal to 9.0.0 and less than 9.5.20, and greater than or equal to 10.0.0 and less than 10.4.6, it has been discovered that an internal verification mechanism can be use…

Published Jul 29, 2020CWE-20EPSS 2.23%

Overview

CVE-2020-15098 is a high-severity vulnerability. It was published on July 29, 2020 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

In TYPO3 CMS greater than or equal to 9.0.0 and less than 9.5.20, and greater than or equal to 10.0.0 and less than 10.4.6, it has been discovered that an internal verification mechanism can be used to generate arbitrary checksums. This allows to inject arbitrary data having a valid cryptographic message authentication code (HMAC-SHA1) and can lead to various attack chains including potential privilege escalation, insecure deserialization & remote code execution. The overall severity of this vulnerability is high based on mentioned attack chains and the requirement of having a valid backend user session (authenticated). This has been patched in versions 9.5.20 and 10.4.6.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/TYPO3/TYPO3.CMS/commit/85d3e70dff35a99ef53f4b561114acfa9e5c47e1GitHubgithub.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-m5vr-3m74-jwxpReftypo3.org/security/advisory/typo3-core-sa-2016-013Reftypo3.org/security/advisory/typo3-core-sa-2020-008GitHubgithub.com/TYPO3/TYPO3.CMS/commit/85d3e70dff35a99ef53f4b561114acfa9e5c47e1GitHubgithub.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-m5vr-3m74-jwxpReftypo3.org/security/advisory/typo3-core-sa-2016-013Reftypo3.org/security/advisory/typo3-core-sa-2020-008

How CyberStrike helps

Frequently asked questions

What is CVE-2020-15098?

CVE-2020-15098 is a high-severity vulnerability. It was published on July 29, 2020 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2020-15098?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2020-15098?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2020-15098?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2020-15098 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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