Is CVE-2018-20452 in the CISA KEV catalog?

No. CVE-2018-20452 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-20452?

CVE-2018-20452 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2018-20452?

CVE-2018-20452 has an EPSS score of 1.50% (71th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-20452?

Upgrade r-cran-readxl on debian 11 to 1.2.0.9000-1 or later.

CVE & CISA-KEV Catalog

CVE-2018-20452

HIGHEPSS 71th pctl

8.8

CVSS v3

NVD

Description

The read_MSAT_body function in ole.c in libxls 1.4.0 has an invalid free that allows attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted file, because of inconsistent memory management (new versus free) in ole2_read_header in ole.c.

CWE-119Buffer Overflow

How to fix

Remediation Available

r-cran-readxlDebian

Fixed in:1.2.0.9000-1CVE-2018-20452

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 InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploit Intelligence

1.50%probability of exploitation in 30 days

71stpercentile

Elevated risk: more likely to be exploited than 71% of all known CVEs.

References

Exploit1

github.com

Other references1

security.gentoo.org

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.