Is CVE-2021-20284 in the CISA KEV catalog?

No. CVE-2021-20284 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-20284?

CVE-2021-20284 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2021-20284?

CVE-2021-20284 has an EPSS score of 1.29% (67th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-20284?

Upgrade binutils on debian 12 to 2.37-3 or later.

CVE & CISA-KEV Catalog

CVE-2021-20284

MEDIUM

5.5

CVSS v3

NVD

Description

A flaw was found in GNU Binutils 2.35.1, where there is a heap-based buffer overflow in _bfd_elf_slurp_secondary_reloc_section in elf.c due to the number of symbols not calculated correctly. The highest threat from this vulnerability is to system availability.

CWE-119Buffer Overflow CWE-787Out-of-bounds Write

How to fix

Remediation Available

binutilsDebian

Fixed in:2.37-3CVE-2021-20284

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 ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

1.29%probability of exploitation in 30 days

67thpercentile

Moderate risk: more likely to be exploited than 67% of all known CVEs.

References

Exploit2

Third-Party Advisory2

Related Vulnerabilities

Other CWE-119 (Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-4966	Critical	9.4	100%	KEV + Ransom	Fix
CVE-2017-11882	High	7.8	100%	KEV + Ransom	-
CVE-2020-0796	Critical	10.0	100%	KEV + Ransom	-
CVE-2008-4250	Critical	9.8	99%	KEV	-
CVE-2017-15944	Critical	9.8	98%	KEV	Fix
CVE-2015-0014	High	10.0	97%	-	-

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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.