CVE-2020-15098CWE-20CWE-200CWE-325CWE-502

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

High · published July 29, 2020

CVSS v3.1
8.8
EPSS
2%
Percentile
82.6
In the wild
Unconfirmed
What it 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 record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.02229 · 82.6th percentile
Weaknesses
CWE-20 · Improper Input Validation; CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor; CWE-325 · Missing Cryptographic Step; CWE-502 · Deserialization of Untrusted Data
Published
2020-07-29T16:15Z
EPSS history
Timeline
  • 29 JUL 16:15Z
    Missing Required Cryptographic Step Leading to Sensitive Information Disclosure in TYPO3 CMS
    cvelistv5