title: Junos OS Evolved: PTX10003 Series: Packets which are not destined to the router can reach the RE
description:
An Improper Check for Unusual or Exceptional Conditions in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS Evolved on PTX10003 Series allows an unauthenticated adjacent attacker to cause an impact to the integrity of the system.
When specific transit MPLS packets are received by the PFE, these packets are internally forwarded to the RE. This issue is a prerequisite for CVE-2023-44195.
This issue affects Juniper Networks Junos OS Evolved:
*  All versions prior to 20.4R3-S8-EVO;
*  21.1-EVO version 21.1R1-EVO and later;
*  21.2-EVO versions prior to 21.2R3-S6-EVO;
*  21.3-EVO version 21.3R1-EVO and later;
*  21.4-EVO versions prior to 21.4R3-S3-EVO;
*  22.1-EVO versions prior to 22.1R3-S4-EVO;
*  22.2-EVO versions prior to 22.2R3-S3-EVO;
*  22.3-EVO versions prior to 22.3R2-S2-EVO, 22.3R3-EVO;
*  22.4-EVO versions prior to 22.4R2-EVO.
problem types: CWE-754 Improper Check for Unusual or Exceptional Conditions
affected:
{
defaultStatus: unaffected
platforms: PTX10003 Series
product: Junos OS Evolved
vendor: Juniper Networks
versions:
lessThan: 20.4R3-S8-EVO, status: affected, version: 0, versionType: semver
lessThan: 21.1*-EVO, status: affected, version: 21.1R1-EVO, versionType: semver
lessThan: 21.2R3-S6-EVO, status: affected, version: 21.2-EVO, versionType: semver
lessThan: 21.3*-EVO, status: affected, version: 21.3R1-EVO, versionType: semver
lessThan: 21.4R3-S3-EVO, status: affected, version: 21.4-EVO, versionType: semver
lessThan: 22.1R3-S4-EVO, status: affected, version: 22.1-EVO, versionType: semver
lessThan: 22.2R3-S3-EVO, status: affected, version: 22.2-EVO, versionType: semver
lessThan: 22.3R2-S2-EVO, 22.3R3-EVO, status: affected, version: 22.3-EVO, versionType: semver
lessThan: 22.4R2-EVO, status: affected, version: 22.4-EVO, versionType: semver
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: ADJACENT_NETWORK
availabilityImpact: NONE
baseScore: 6.5
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: HIGH
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
version: 3.1
]
format: CVSS
scenarios: GENERAL
exploits: Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
solutions: The following software releases have been updated to resolve this specific issue: Junos OS Evolved 20.4R3-S8-EVO, 21.2R3-S6-EVO, 21.4R3-S3-EVO, 22.1R3-S4-EVO, 22.2R3-S3-EVO, 22.3R2-S2-EVO, 22.3R3-EVO, 22.4R2-EVO, 23.2R1-EVO, and all subsequent releases.
workarounds: There are no known workarounds for this issue.