CVEvulnerability

CVE-2020-15098

8.8 HIGH Published 2020-07-29 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-07-29
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 ([email protected])
8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
6.5 MEDIUM — AV:N/AC:L/Au:S/C:P/I:P/A:P
Weaknesses
CWE-20, CWE-200, CWE-325, CWE-327, CWE-502

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.

Affected configurations

• typo3 typo3 (>= 9.0.0 < 9.5.20) • typo3 typo3 (>= 10.0.0 < 10.4.6)

Related

Weakness · CWE (5)

  • CWE-20 Improper Input Validation weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor weakness
  • CWE-325 Missing Cryptographic Step weakness
  • CWE-327 Use of a Broken or Risky Cryptographic Algorithm weakness
  • CWE-502 Deserialization of Untrusted Data weakness

References