Is CVE-2022-36440 in the CISA KEV catalog?

No. CVE-2022-36440 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-36440?

CVE-2022-36440 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2022-36440?

CVE-2022-36440 has an EPSS score of 1.62% (73th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-36440?

Upgrade frr on debian 11 to 7.5.1-1.1+deb11u2 or later. Fixes are available for 9 affected products.

CVE & CISA-KEV Catalog

CVE-2022-36440

HIGHEPSS 73th pctl

7.5

CVSS v3

NVD

Description

A reachable assertion was found in Frrouting frr-bgpd 8.3.0 in the peek_for_as4_capability function. Attackers can maliciously construct BGP open packets and send them to BGP peers running frr-bgpd, resulting in DoS.

CWE-617

How to fix

Remediation Available

frrDebian

Fixed in:7.5.1-1.1+deb11u2CVE-2022-36440

Fixed in:8.4.1-1CVE-2022-36440

frrRocky

Fixed in:0:8.3.1-11.el9_3RHSA-2023:6434

frrRed Hat / RHEL

Fixed in:0:8.3.1-11.el9_3RHSA-2023:6434

frr-debuginfoRocky

Fixed in:0:8.3.1-11.el9_3RHSA-2023:6434

frr-debuginfoRed Hat / RHEL

Fixed in:0:8.3.1-11.el9_3RHSA-2023:6434

frr-debugsourceRocky

Fixed in:0:8.3.1-11.el9_3RHSA-2023:6434

frr-debugsourceRed Hat / RHEL

Fixed in:0:8.3.1-11.el9_3RHSA-2023:6434

frr-selinuxRocky

Fixed in:0:8.3.1-11.el9_3RHSA-2023:6434

frr-selinuxRed Hat / RHEL

Fixed in:0:8.3.1-11.el9_3RHSA-2023:6434

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

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

1.62%probability of exploitation in 30 days

73rdpercentile

Elevated risk: more likely to be exploited than 73% of all known CVEs.

References

Exploit1

github.com

Third-Party Advisory6

Related Vulnerabilities

Other CWE-617 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-8617	High	7.5	93%	-	Fix
CVE-2020-36222	High	7.5	78%	-	Fix
CVE-2006-5779	High	7.5	75%	-	Fix
CVE-2021-27212	High	7.5	64%	-	Fix
CVE-2018-5740	High	7.5	59%	-	Fix
CVE-2023-28425	Medium	5.5	55%	-	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.