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CVE-2020-15098

Missing Required Cryptographic Step Leading to Sensitive Information Disclosure in TYPO3 CMS

Published: Jul 29, 2020Updated: Nov 21, 2024 Sources: CVE List NVD GHSACWE-20
NVD MITRE
8.8CVSSHIGH
EPSS Score
2.2%
Top 19.6%
CISA KEV
Not in KEV
Exploits
2 Known
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-20CWE-200CWE-325CWE-502CWE-327

Affected Products

TYPO3 CMSTYPO3Web & CMS Plugins
typo3typo3Web & CMS Plugins
typo3/cms-corePackagistOSS Libraries
typo3/cmsPackagistOSS Libraries
typo3oss-projectDEWeb & CMS Pluginsaka typo3cms, typo3 cms
packagistpackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

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Exploitability

2 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

5 techniques
Collection
Execution
Initial Access
View detailed technique mapping

References

https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-m5vr-3m74-jwxp
github.com
https://typo3.org/security/advisory/typo3-core-sa-2016-013
typo3.org
https://typo3.org/security/advisory/typo3-core-sa-2020-008
typo3.org
and 6 more references View all →

Timeline

Published
Jul 29, 2020
Last Updated
Nov 21, 2024

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