Information disclosure in TYPO3
CVE-2020-15098
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.022 (82.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 82.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-m5vr-3m74-jwxp (Third Party Advisory)
- typo3.org/security/advisory/typo3-core-sa-2016-013 (Vendor Advisory)
- typo3.org/security/advisory/typo3-core-sa-2020-008 (Vendor Advisory)
- github.com/TYPO3/TYPO3.CMS/commit/85d3e70dff35a99ef53f4b561114acfa9e5c47e1 (Broken Link)
Frequently asked questions
- What is CVE-2020-15098?
- CVE-2020-15098 is a high-severity vulnerability in TYPO3, classified under Improper Input Validation. CVSS score: 8.8/10. Published 2020-07-29.
- How severe is CVE-2020-15098?
- High severity. CVSS v3 base score is 8.8 out of 10.