TYPO3 CMS up to 9.5.19/10.4.5 Checksum input validation

Summaryinfo

A vulnerability was found in TYPO3 CMS up to 9.5.19/10.4.5. It has been rated as critical. Affected by this vulnerability is an unknown functionality of the component Checksum Handler. Performing a manipulation results in input validation. This vulnerability is cataloged as CVE-2020-15098. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in TYPO3 CMS up to 9.5.19/10.4.5 (Content Management System). This affects an unknown function of the component Checksum Handler. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was shared 07/29/2020 (GitHub Repository). It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2020-15098 since 06/25/2020. It is possible to initiate the attack remotely. The successful exploitation requires a authentication. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 9.5.20 or 10.4.6 eliminates this vulnerability.

The entry VDB-159160 is related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Content Management System

Vendor

• TYPO3

Name

• CMS

Version

• 9.5.0
• 9.5.1
• 9.5.2
• 9.5.3
• 9.5.4
• 9.5.5
• 9.5.6
• 9.5.7
• 9.5.8
• 9.5.9
• 9.5.10
• 9.5.11
• 9.5.12
• 9.5.13
• 9.5.14
• 9.5.15
• 9.5.16
• 9.5.17
• 9.5.18
• 9.5.19
• 10.4.0
• 10.4.1
• 10.4.2
• 10.4.3
• 10.4.4
• 10.4.5

License

• open-source

CPE 2.3info

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CPE 2.2info

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Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

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