GitHub Advisory DatabaseGHSA-2WJ9-434X-9HVPInsecure Deserialization in Backend User Settings in TYPO3 CMS
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:S/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
79.6%
It has been discovered that backend user settings (in $BE_USER->uc) are vulnerable to insecure deserialization. In combination with vulnerabilities of 3rd party components this can lead to remote code execution. A valid backend user account is needed to exploit this vulnerability.
Update to TYPO3 versions 9.5.17 or 10.4.2 that fix the problem described.
References
Affected configurations
References
github.com/advisories/GHSA-2wj9-434x-9hvp
github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2020-11067.yaml
github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2020-11067.yaml
github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-2wj9-434x-9hvp
nvd.nist.gov/vuln/detail/CVE-2020-11067
typo3.org/security/advisory/typo3-core-sa-2020-005
Related
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:S/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
79.6%