CVE-2019-19849

moderate-risk
Published 2019-12-17

An issue was discovered in TYPO3 before 8.7.30, 9.x before 9.5.12, and 10.x before 10.2.2. It has been discovered that the classes QueryGenerator and QueryView are vulnerable to insecure deserialization. One exploitable scenario requires having the system extension ext:lowlevel (Backend Module: DB Check) installed, with a valid backend user who has administrator privileges. The other exploitable scenario requires having the system extension ext:sys_action installed, with a valid backend user who has limited privileges.

Do I need to act?

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0.75% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Typo3

References (4)

Vendor Advisory https://review.typo3.org/q/%2522Resolves:+%252389005%2522+topic:security
Vendor Advisory https://typo3.org/security/advisory/typo3-core-sa-2019-026/
Vendor Advisory https://review.typo3.org/q/%2522Resolves:+%252389005%2522+topic:security
Vendor Advisory https://typo3.org/security/advisory/typo3-core-sa-2019-026/
38
/ 100
moderate-risk
Severity 30/34 · Critical
Exploitability 3/34 · Minimal
Exposure 5/34 · Minimal