Is CVE-2023-3036 in the CISA KEV catalog?

No. CVE-2023-3036 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-3036?

CVE-2023-3036 has a CVSS v3 base score of 8.6 (HIGH).

What is the EPSS score for CVE-2023-3036?

CVE-2023-3036 has an EPSS score of 2.24% (81th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-3036?

Upgrade cfnts to 2023-06-01 or later.

CVE & CISA-KEV Catalog

CVE-2023-3036

HIGHEPSS 81th pctl

8.6

CVSS v3

NVD

Description

An unchecked read in NTP server in github.com/cloudflare/cfnts prior to commit 783490b https://github.com/cloudflare/cfnts/commit/783490b913f05e508a492cd7b02e3c4ec2297b71 enabled a remote attacker to trigger a panic by sending an NTSAuthenticator packet with extension length longer than the packet contents.

CWE-119Buffer Overflow CWE-125Out-of-bounds Read

How to fix

Remediation Available

cfntsNVD

Affected:< 2023-06-01Fixed in:2023-06-01CVE-2023-3036derived 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 ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeChanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

2.24%probability of exploitation in 30 days

81stpercentile

Elevated risk: more likely to be exploited than 81% of all known CVEs.

References

Patch1

github.com

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.