Is CVE-2021-21237 in the CISA KEV catalog?

No. CVE-2021-21237 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-21237?

CVE-2021-21237 has a CVSS v3 base score of 7.2 (HIGH).

What is the EPSS score for CVE-2021-21237?

CVE-2021-21237 has an EPSS score of 0.44% (35th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-21237?

Upgrade git large file storage to 2.13.2 or later.

CVE & CISA-KEV Catalog

CVE-2021-21237

HIGH

7.2

CVSS v3

NVD

Description

Git LFS is a command line extension for managing large files with Git. On Windows, if Git LFS operates on a malicious repository with a git.bat or git.exe file in the current directory, that program would be executed, permitting the attacker to execute arbitrary code. This does not affect Unix systems. This is the result of an incomplete fix for CVE-2020-27955. This issue occurs because on Windows, Go includes (and prefers) the current directory when the name of a command run does not contain a directory separator. Other than avoiding untrusted repositories or using a different operating system, there is no workaround. This is fixed in v2.13.2.

CWE-426

How to fix

Remediation Available

git large file storageNVD

Affected:< 2.13.2Fixed in:2.13.2CVE-2021-21237derived 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 VectorLocal

Attack ComplexityHigh

Privileges RequiredLow

User InteractionRequired

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

0.44%probability of exploitation in 30 days

35thpercentile

Low risk: more likely to be exploited than 35% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory3

Related Vulnerabilities

Other CWE-426 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-0096	High	9.3	71%	-	-
CVE-2016-10009	High	7.3	37%	-	Fix
CVE-2016-0016	High	7.8	31%	-	-
CVE-2012-1854	High	7.8	21%	KEV	-
CVE-2018-12589	High	7.8	20%	-	-
CVE-2022-22047	High	7.8	19%	KEV	Fix

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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.