Is CVE-2023-36842 in the CISA KEV catalog?

No. CVE-2023-36842 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-36842?

CVE-2023-36842 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2023-36842?

CVE-2023-36842 has an EPSS score of 0.29% (21th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-36842?

Upgrade junos to 20.4 or later.

CVE & CISA-KEV Catalog

CVE-2023-36842

MEDIUM

6.5

CVSS v3

NVD

Description

An Improper Check for Unusual or Exceptional Conditions vulnerability in Juniper DHCP Daemon (jdhcpd) of Juniper Networks Junos OS allows an adjacent, unauthenticated attacker to cause the jdhcpd to consume all the CPU cycles resulting in a Denial of Service (DoS). On Junos OS devices with forward-snooped-client configured, if an attacker sends a specific DHCP packet to a non-configured interface, this will cause an infinite loop. The DHCP process will have to be restarted to recover the service. This issue affects: Juniper Networks Junos OS * All versions earlier than 20.4R3-S9; * 21.2 versions earlier than 21.2R3-S7; * 21.3 versions earlier than 21.3R3-S5; * 21.4 versions earlier than 21.4R3-S5; * 22.1 versions earlier than 22.1R3-S4; * 22.2 versions earlier than 22.2R3-S3; * 22.3 versions earlier than 22.3R3-S2; * 22.4 versions earlier than 22.4R2-S2, 22.4R3; * 23.2 versions earlier than 23.2R2.

CWE-703 CWE-755

How to fix

Remediation Available

junosNVD

Affected:< 20.4Fixed in:20.4CVE-2023-36842derived 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 VectorAdjacent

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.29%probability of exploitation in 30 days

21stpercentile

Low risk: more likely to be exploited than 21% of all known CVEs.

References

Vendor Advisory1

supportportal.juniper.net

Other references1

first.org

Related Vulnerabilities

Other CWE-703 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-21894	Critical	9.8	19%	-	-
CVE-2019-5031	High	8.8	6.0%	-	-
CVE-2023-49786	High	7.5	5.3%	-	Fix
CVE-2024-10781	High	8.1	3.8%	-	Fix
CVE-2024-22052	High	7.5	3.8%	-	-
CVE-2024-22053	High	8.2	3.5%	-	-

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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.