CVE-2023-44196 Junos OS Evolved: PTX10003 Series: Packets which are not destined to the router can reach the RE
An unauthenticated adjacent attacker can cause transit MPLS packets to reach the Routing Engine, compromising system integrity.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-44196?
CVE-2023-44196 is a medium-severity vulnerability in Juniper Junos Os Evolved, published on 12 Oct 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-754
Which versions are affected by CVE-2023-44196?
It affects 1 product.
Products include Juniper Junos Os Evolved.
How do I fix CVE-2023-44196?
No fix has been published for CVE-2023-44196 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-44196 being exploited?
There is no known exploitation of CVE-2023-44196 in the wild and no public exploit code.
Other vulnerabilities in Juniper Junos Os Evolved
- CVE-2026-21902 Junos OS Evolved: PTX Series: A vulnerability allows a unauthenticated, network-based attacker to execute code as root
- CVE-2023-28983 Junos OS Evolved: Shell Injection vulnerability in the gNOI server
- CVE-2025-21599 Denial of service in Junos OS Evolved
- CVE-2024-47502 Junos OS Evolved: TCP session state is not always cleared on the Routing Engine leading to DoS
- CVE-2024-39531 Junos OS Evolved: ACX 7000 Series: Protocol specific DDoS configuration affects other protocols
Sources
Also known as GHSA-ghc9-27wr-4w58.