Is CVE-2021-4287 in the CISA KEV catalog?

No. CVE-2021-4287 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-4287?

CVE-2021-4287 has a CVSS v3 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2021-4287?

CVE-2021-4287 has an EPSS score of 1.93% (78th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-4287?

Upgrade binwalk on debian 12 to 2.3.3+dfsg1-1 or later.

CVE & CISA-KEV Catalog

CVE-2021-4287

MEDIUMEPSS 78th pctl

5.0

CVSS v3

NVD

Description

A vulnerability, which was classified as problematic, was found in ReFirm Labs binwalk up to 2.3.2. Affected is an unknown function of the file src/binwalk/modules/extractor.py of the component Archive Extraction Handler. The manipulation leads to symlink following. It is possible to launch the attack remotely. Upgrading to version 2.3.3 is able to address this issue. The name of the patch is fa0c0bd59b8588814756942fe4cb5452e76c1dcd. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-216876.

CWE-61 CWE-59Link Following

How to fix

Remediation Available

binwalkDebian

Fixed in:2.3.3+dfsg1-1CVE-2021-4287

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 InteractionRequired

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityLow

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

Exploit Intelligence

1.93%probability of exploitation in 30 days

78thpercentile

Elevated risk: more likely to be exploited than 78% of all known CVEs.

References

Patch2

Third-Party Advisory3

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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.