PT-2022-6647 · Juniper Networks · Junos+1

Published 2022-10-12 · Updated 2022-10-21 · CVE-2022-22238

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Juniper Networks Junos OS versions prior to 19.2R3-S6 Juniper Networks Junos OS versions 19.3 prior to 19.3R3-S6 Juniper Networks Junos OS versions 19.4 prior to 19.4R3-S8 Juniper Networks Junos OS versions 20.1 prior to 20.1R3-S2 Juniper Networks Junos OS versions 20.2 prior to 20.2R3-S3 Juniper Networks Junos OS versions 20.3 prior to 20.3R3-S2 Juniper Networks Junos OS versions 20.4 prior to 20.4R3-S1 Juniper Networks Junos OS versions 21.1 prior to 21.1R3 Juniper Networks Junos OS versions 21.2 prior to 21.2R1-S2, 21.2R3 Juniper Networks Junos OS versions 21.3 prior to 21.3R2 Juniper Networks Junos OS Evolved versions prior to 20.2R3-S3-EVO Juniper Networks Junos OS Evolved versions 20.4-EVO prior to 20.4R3-S1-EVO Juniper Networks Junos OS Evolved versions 21.3-EVO prior to 21.3R2-EVO

Description The issue is related to an improper check for unusual or exceptional conditions in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved. This can be exploited by an unauthenticated, adjacent attacker to cause a Denial of Service (DoS) when an incoming RESV message corresponding to a protected LSP is malformed, resulting in an incorrect internal state and an rpd core.

Recommendations For Juniper Networks Junos OS versions prior to 19.2R3-S6, update to version 19.2R3-S6 or later. For Juniper Networks Junos OS versions 19.3 prior to 19.3R3-S6, update to version 19.3R3-S6 or later. For Juniper Networks Junos OS versions 19.4 prior to 19.4R3-S8, update to version 19.4R3-S8 or later. For Juniper Networks Junos OS versions 20.1 prior to 20.1R3-S2, update to version 20.1R3-S2 or later. For Juniper Networks Junos OS versions 20.2 prior to 20.2R3-S3, update to version 20.2R3-S3 or later. For Juniper Networks Junos OS versions 20.3 prior to 20.3R3-S2, update to version 20.3R3-S2 or later. For Juniper Networks Junos OS versions 20.4 prior to 20.4R3-S1, update to version 20.4R3-S1 or later. For Juniper Networks Junos OS versions 21.1 prior to 21.1R3, update to version 21.1R3 or later. For Juniper Networks Junos OS versions 21.2 prior to 21.2R1-S2, 21.2R3, update to version 21.2R1-S2, 21.2R3 or later. For Juniper Networks Junos OS versions 21.3 prior to 21.3R2, update to version 21.3R2 or later. For Juniper Networks Junos OS Evolved versions prior to 20.2R3-S3-EVO, update to version 20.2R3-S3-EVO or later. For Juniper Networks Junos OS Evolved versions 20.4-EVO prior to 20.4R3-S1-EVO, update to version 20.4R3-S1-EVO or later. For Juniper Networks Junos OS Evolved versions 21.3-EVO prior to 21.3R2-EVO, update to version 21.3R2-EVO or later.

Fix

DoS

Improper Check for Exceptional Conditions

Weakness Enumeration

CWE-754

Related Identifiers

BDU:2023-03126

CVE-2022-22238

Affected Products

Junos

Junos Evolved

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2022-22238 · Security Note
• https://osv.dev/vulnerability/CVE-2022-22238 · Vendor Advisory
• https://kb.juniper.net/JSA69894 · Vendor Advisory
• https://bdu.fstec.ru/vul/2023-03126 · Security Note
• https://vuldb.com/ru/?id.211123 · Note