Is CVE-2020-15098 in the CISA KEV catalog?

No. CVE-2020-15098 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-15098?

CVE-2020-15098 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2020-15098?

CVE-2020-15098 has an EPSS score of 2.23% (81th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-15098?

Upgrade typo3 to 10.4.6 or later.

CVE & CISA-KEV Catalog

CVE-2020-15098

HIGHEPSS 81th pctl

8.8

CVSS v3

NVD

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.

CWE-20Improper Input Validation CWE-200Information Exposure CWE-325 CWE-502Deserialization of Untrusted Data CWE-327

How to fix

Remediation Available

typo3NVD

Affected:>= 10.0.0, < 10.4.6Fixed in:10.4.6CVE-2020-15098derived 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 ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

2.23%probability of exploitation in 30 days

81stpercentile

Elevated risk: more likely to be exploited than 81% of all known CVEs.

References

Vendor Advisory2

Third-Party Advisory1

github.com

Other references1

github.com

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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.