PT-2024-4861 · Juniper Networks · Junos

Published 2024-04-10 · Updated 2024-05-16 · CVE-2024-30384

Positive Technologies (AI Summary)

CVSS v4.0

6.8

Medium

Base vector

AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Name of the Vulnerable Software and Affected Versions: Junos OS versions prior to 20.4R3-S10 Junos OS versions 21.2 prior to 21.2R3-S7 Junos OS versions 21.4 prior to 21.4R3-S6

Description: The issue is related to an Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on EX4300 Series. This vulnerability can be exploited by a locally authenticated attacker with low privileges to cause a Denial-of-Service (DoS). If a specific CLI command is issued, a PFE crash will occur, interrupting traffic forwarding until the system self-recovers.

Recommendations: For Junos OS versions prior to 20.4R3-S10, update to version 20.4R3-S10 or later. For Junos OS versions 21.2 prior to 21.2R3-S7, update to version 21.2R3-S7 or later. For Junos OS versions 21.4 prior to 21.4R3-S6, update to version 21.4R3-S6 or later. As a temporary workaround, consider avoiding the use of the specific CLI command that causes the PFE crash until a patch is available.

Fix

DoS

Improper Check for Exceptional Conditions

Weakness Enumeration

CWE-754

Related Identifiers

BDU:2024-05385

CVE-2024-30384

Affected Products

Junos

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2024-30384 · Security Note
• https://osv.dev/vulnerability/CVE-2024-30384 · Vendor Advisory
• https://bdu.fstec.ru/vul/2024-05385 · Security Note
• http://supportportal.juniper.net/JSA79186 · Vendor Advisory
• https://first.org/cvss/calculator/4.0#CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L · Note