Vulnerability Name:

CVE-2020-11067 (CCN-181808)

Assigned:2020-05-12
Published:2020-05-12
Updated:2020-05-15
Summary:In TYPO3 CMS 9.0.0 through 9.5.16 and 10.0.0 through 10.4.1, it has been discovered that backend user settings (in $BE_USER->uc) are vulnerable to insecure deserialization. In combination with vulnerabilities of third party components, this can lead to remote code execution. A valid backend user account is needed to exploit this vulnerability. This has been fixed in 9.5.17 and 10.4.2.
CVSS v3 Severity:8.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
7.7 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
8.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
7.7 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:6.0 Medium (CVSS v2 Vector: AV:N/AC:M/Au:S/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
9.0 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-502
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2020-11067

Source: XF
Type: UNKNOWN
typo3-cve202011067-code-exec(181808)

Source: CONFIRM
Type: Third Party Advisory
https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-2wj9-434x-9hvp

Source: CCN
Type: TYPO3-CORE-SA-2020-005
Insecure Deserialization in Backend User Settings

Vulnerable Configuration:Configuration 1:
  • cpe:/a:typo3:typo3:*:*:*:*:*:*:*:* (Version >= 9.0.0 and <= 9.5.16)
  • OR cpe:/a:typo3:typo3:*:*:*:*:*:*:*:* (Version >= 10.0.0 and <= 10.4.1)

    • Configuration CCN 1:
  • cpe:/a:typo3:typo3:9.0.0:*:*:*:*:*:*:*
  • OR cpe:/a:typo3:typo3:10.0.0:*:*:*:*:*:*:*
  • OR cpe:/a:typo3:typo3:10.4.1:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    typo3 typo3 *
    typo3 typo3 *
    typo3 typo3 9.0.0
    typo3 typo3 10.0.0
    typo3 typo3 10.4.1