CVE-2020-15098: high-severity vulnerability in TYPO3 CMS
Missing Required Cryptographic Step Leading to Sensitive Information Disclosure in TYPO3 CMS
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 2.2%
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
TYPO3 · TYPO3 CMSRelated CVEs — TYPO3 CMS
In the same product, most dangerous first.
CVE-2020-11067HIGHDeserialization of Untrusted Data in TYPO3 CMSEPSS 2.0%CVE-2020-15099HIGHExposure of Sensitive Information to an Unauthorized Actor in TYPO3 CMSEPSS 1.8%CVE-2020-11066HIGHImproperly Controlled Modification of Dynamically-Determined Object Attributes in TYPO3 CMSEPSS 1.5%CVE-2020-11063LOWObservable Response Discrepancy in TYPO3 CMSEPSS 1.2%CVE-2020-11069HIGHCross-Site Request Forgery in TYPO3 CMSEPSS 0.7%CVE-2020-11065MEDIUMCross-Site Scripting in TYPO3 CMSEPSS 0.5%