CVE Catalog

CVE-2023-36832

HighCVSS 7.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.54%

41th percentile - higher than 41% of all known CVEs

Summary

CVE-2023-36832 is a vulnerability in Juniper Networks' Junos OS on MX Series devices that allows an unauthenticated attacker to send specific packets to an AMS interface, causing the packet forwarding engine (PFE) to crash and resulting in a Denial of Service (DoS). Continued processing of these packets can lead to a sustained DoS condition.

Risk Assessment

Organizations may experience service outages, leading to significant disruptions in network operations. An attacker could exploit this vulnerability to destabilize the system.

Recommendation

It is recommended to update the Junos OS to a non-vulnerable version as listed in the description. Additionally, monitor network traffic for potential attack attempts.

Related vulnerabilities

Original NVD description (English source)

An Improper Handling of Exceptional Conditions vulnerability in packet processing of Juniper Networks Junos OS on MX Series allows an unauthenticated network-based attacker to send specific packets to an Aggregated Multiservices (AMS) interface on the device, causing the packet forwarding engine (PFE) to crash, resulting in a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue is only triggered by packets destined to a local-interface via a service-interface (AMS). AMS is only supported on the MS-MPC, MS-MIC, and MX-SPC3 cards. This issue is not experienced on other types of interfaces or configurations. Additionally, transit traffic does not trigger this issue. This issue affects Juniper Networks Junos OS on MX Series: All versions prior to 19.1R3-S10; 19.2 versions prior to 19.2R3-S7; 19.3 versions prior to 19.3R3-S8; 19.4 versions prior to 19.4R3-S12; 20.2 versions prior to 20.2R3-S8; 20.4 versions prior to 20.4R3-S7; 21.1 versions prior to 21.1R3-S5; 21.2 versions prior to 21.2R3-S5; 21.3 versions prior to 21.3R3-S4; 21.4 versions prior to 21.4R3-S3; 22.1 versions prior to 22.1R3-S2; 22.2 versions prior to 22.2R3; 22.3 versions prior to 22.3R2-S1, 22.3R3; 22.4 versions prior to 22.4R1-S2, 22.4R2.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS