Is CVE-2021-3570 in the CISA KEV catalog?

No. CVE-2021-3570 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-3570?

CVE-2021-3570 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2021-3570?

CVE-2021-3570 has an EPSS score of 2.96% (86th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-3570?

Upgrade linuxptp on debian 11 to 3.1-2.1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2021-3570

HIGHEPSS 86th pctl

8.8

CVSS v3

NVD

Description

A flaw was found in the ptp4l program of the linuxptp package. A missing length check when forwarding a PTP message between ports allows a remote attacker to cause an information leak, crash, or potentially remote code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. This flaw affects linuxptp versions before 3.1.1, before 2.0.1, before 1.9.3, before 1.8.1, before 1.7.1, before 1.6.1 and before 1.5.1.

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

How to fix

Remediation Available

linuxptpDebian

Fixed in:3.1-2.1CVE-2021-3570

linuxptpUbuntu

Fixed in:1.6-1ubuntu0.1~esm1USN-6097-1

Fixed in:1.8-1ubuntu0.1USN-6097-1

Fixed in:1.9.2-1ubuntu0.1USN-6097-1

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 RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

2.96%probability of exploitation in 30 days

86thpercentile

Elevated risk: more likely to be exploited than 86% of all known CVEs.

References

Patch1

bugzilla.redhat.com

Third-Party Advisory2

Other references2

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.