Is CVE-2020-27304 in the CISA KEV catalog?

No. CVE-2020-27304 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-27304?

CVE-2020-27304 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2020-27304?

CVE-2020-27304 has an EPSS score of 3.14% (86th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-27304?

Upgrade civetweb on debian 12 to 1.15+dfsg-1 or later.

CVE & CISA-KEV Catalog

CVE-2020-27304

CRITICALEPSS 86th pctl

9.8

CVSS v3

NVD

Description

The CivetWeb web library does not validate uploaded filepaths when running on an OS other than Windows, when using the built-in HTTP form-based file upload mechanism, via the mg_handle_form_request API. Web applications that use the file upload form handler, and use parts of the user-controlled filename in the output path, are susceptible to directory traversal

CWE-23 CWE-22Path Traversal

How to fix

Remediation Available

civetwebDebian

Fixed in:1.15+dfsg-1CVE-2020-27304

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 RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

3.14%probability of exploitation in 30 days

86thpercentile

Elevated risk: more likely to be exploited than 86% of all known CVEs.

References

Patch1

cert-portal.siemens.com

Exploit1

jfrog.com

Third-Party Advisory1

groups.google.com

Other references1

cert-portal.siemens.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.