CVE & CISA-KEV Catalog

CVE-2022-23500

MEDIUM
5.9
CVSS v3
NVD

Description

TYPO3 is an open source PHP based web content management system. In versions prior to 9.5.38, 10.4.33, 11.5.20, and 12.1.1, requesting invalid or non-existing resources via HTTP triggers the page error handler, which again could retrieve content to be shown as an error message from another page. This leads to a scenario in which the application is calling itself recursively - amplifying the impact of the initial attack until the limits of the web server are exceeded. This vulnerability is very similar, but not identical, to the one described in CVE-2021-21359. This issue is patched in versions 9.5.38 ELTS, 10.4.33, 11.5.20 or 12.1.1.

How to fix

Remediation Available
typo3NVD
Affected:>= 11.0.0, < 11.5.20Fixed in:11.5.20CVE-2022-23500derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

0.69%probability of exploitation in 30 days
48thpercentile

Moderate risk: more likely to be exploited than 48% of all known CVEs.

References

Third-Party Advisory1

Related Vulnerabilities

Other CWE-674 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2021-45105Medium5.9100%-Fix
CVE-2024-25111High8.665%-Fix
CVE-2023-50269High8.658%-Fix
CVE-2021-42697High7.536%-Fix
CVE-2018-0739Medium6.519%-Fix
CVE-2007-1285High7.518%-Fix
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Markdown

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HTML

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.