PT-2024-5567 · Juniper Networks · Junos+1

Published 2024-06-25 · Updated 2024-07-11 · CVE-2024-39555

Positive Technologies (AI Summary)

CVSS v4.0

8.7

High

Base vector

AV:N/AC:L/AT:N/PR:N/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:A/V:X/RE:X/U:X

Name of the Vulnerable Software and Affected Versions Junos OS versions prior to 21.4R3-S8 Junos OS versions from 22.2 before 22.2R3-S4 Junos OS versions from 22.3 before 22.3R3-S3 Junos OS versions from 22.4 before 22.4R3-S3 Junos OS versions from 23.2 before 23.2R2-S1 Junos OS versions from 23.4 before 23.4R1-S2, 23.4R2 Junos OS Evolved versions prior to 21.4R3-S8-EVO Junos OS Evolved versions from 22.2-EVO before 22.2R3-S4-EVO Junos OS Evolved versions from 22.3-EVO before 22.3R3-S3-EVO Junos OS Evolved versions from 22.4-EVO before 22.4R3-S3-EVO Junos OS Evolved versions from 23.2-EVO before 23.2R2-S1-EVO Junos OS Evolved versions from 23.4-EVO before 23.4R1-S2-EVO, 23.4R2-EVO

Description An Improper Handling of Exceptional Conditions vulnerability in the Routing Protocol Daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows an attacker sending a specific malformed BGP update message to cause the session to reset, resulting in a Denial of Service (DoS). Continued receipt and processing of these malformed BGP update messages will create a sustained Denial of Service (DoS) condition. This issue affects eBGP and iBGP, in both IPv4 and IPv6 implementations, and requires a remote attacker to have at least one established BGP session. Only systems with segment routing enabled are vulnerable to this issue.

Recommendations For Junos OS versions prior to 21.4R3-S8, update to version 21.4R3-S8 or later. For Junos OS versions from 22.2 before 22.2R3-S4, update to version 22.2R3-S4 or later. For Junos OS versions from 22.3 before 22.3R3-S3, update to version 22.3R3-S3 or later. For Junos OS versions from 22.4 before 22.4R3-S3, update to version 22.4R3-S3 or later. For Junos OS versions from 23.2 before 23.2R2-S1, update to version 23.2R2-S1 or later. For Junos OS versions from 23.4 before 23.4R1-S2, 23.4R2, update to version 23.4R1-S2 or later. For Junos OS Evolved versions prior to 21.4R3-S8-EVO, update to version 21.4R3-S8-EVO or later. For Junos OS Evolved versions from 22.2-EVO before 22.2R3-S4-EVO, update to version 22.2R3-S4-EVO or later. For Junos OS Evolved versions from 22.3-EVO before 22.3R3-S3-EVO, update to version 22.3R3-S3-EVO or later. For Junos OS Evolved versions from 22.4-EVO before 22.4R3-S3-EVO, update to version 22.4R3-S3-EVO or later. For Junos OS Evolved versions from 23.2-EVO before 23.2R2-S1-EVO, update to version 23.2R2-S1-EVO or later. For Junos OS Evolved versions from 23.4-EVO before 23.4R1-S2-EVO, 23.4R2-EVO, update to version 23.4R1-S2-EVO or later. As a temporary workaround, consider disabling segment routing until a patch is available.

Fix

DoS

Improper Handling of Exceptional Conditions

Weakness Enumeration

CWE-755

Related Identifiers

BDU:2024-06246

CVE-2024-39555

Affected Products

Junos

Junos Evolved

References · 10

• https://bdu.fstec.ru/vul/2024-06246 · Security Note
• https://supportportal.juniper.net/JSA83015 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-39555 · Security Note
• https://osv.dev/vulnerability/CVE-2024-39555 · Vendor Advisory
• https://twitter.com/CveFindCom/status/1811188916378017846 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1811200436814102698 · Twitter Post
• https://vuldb.com/ru/?id.271116 · Note
• https://twitter.com/CVEnew/status/1811322688792826294 · Twitter Post
• https://twitter.com/vuldb/status/1811315749920854069 · Twitter Post
• https://t.me/cvedetector/614 · Telegram Post