Is CVE-2020-5283 in the CISA KEV catalog?

No. CVE-2020-5283 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-5283?

CVE-2020-5283 has a CVSS v3 base score of 3.1 (LOW).

What is the EPSS score for CVE-2020-5283?

CVE-2020-5283 has an EPSS score of 1.22% (65th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-5283?

Upgrade viewvc to 1.2.1 or later.

CVE & CISA-KEV Catalog

CVE-2020-5283

LOW

3.1

CVSS v3

NVD

Description

ViewVC before versions 1.1.28 and 1.2.1 has a XSS vulnerability in CVS show_subdir_lastmod support. The impact of this vulnerability is mitigated by the need for an attacker to have commit privileges to a CVS repository exposed by an otherwise trusted ViewVC instance that also has the `show_subdir_lastmod` feature enabled. The attack vector involves files with unsafe names (names that, when embedded into an HTML stream, would cause the browser to run unwanted code), which themselves can be challenging to create. This vulnerability is patched in versions 1.2.1 and 1.1.28.

CWE-80 CWE-79Cross-Site Scripting (XSS)

How to fix

Remediation Available

viewvcNVD

Affected:>= 1.2.0, < 1.2.1Fixed in:1.2.1CVE-2020-5283derived 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 RequiredHigh

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

1.22%probability of exploitation in 30 days

65thpercentile

Moderate risk: more likely to be exploited than 65% of all known CVEs.

References

Patch2

Exploit1

github.com

Other references1

lists.fedoraproject.org

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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.