Juniper Junos OS up to 23.2R1-S2 Packet Forwarding Engine memory corruption

Summaryinfo

A vulnerability marked as critical has been reported in Juniper Junos OS up to 23.2R1-S2. Impacted is an unknown function of the component Packet Forwarding Engine. This manipulation causes memory corruption. This vulnerability is handled as CVE-2024-30398. The attack can be initiated remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Juniper Junos OS up to 23.2R1-S2. Affected by this vulnerability is an unknown code of the component Packet Forwarding Engine. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect availability. The summary by CVE is:

An Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS). When a high amount of specific traffic is received on a SRX4600 device, due to an error in internal packet handling, a consistent rise in CPU memory utilization occurs. This results in packet drops in the traffic and eventually the PFE crashes. A manual reboot of the PFE will be required to restore the device to original state. This issue affects Junos OS:   21.2 before 21.2R3-S7, 21.4 before 21.4R3-S6,  22.1 before 22.1R3-S5, 22.2 before 22.2R3-S3, 22.3 before 22.3R3-S2, 22.4 before 22.4R3, 23.2 before 23.2R1-S2, 23.2R2.

It is possible to read the advisory at supportportal.juniper.net. This vulnerability is known as CVE-2024-30398 since 03/26/2024. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/07/2025).

Upgrading to version 21.2R3-S7, 21.4R3-S6, 22.1R3-S5, 22.2R3-S3, 22.3R3-S2, 22.4R3, 23.2R1-S2 or 23.2R2 eliminates this vulnerability.

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Productinfo

Type

• Router Operating System

Vendor

• Juniper

Name

• Junos OS

Version

• 21.2R3-S6
• 21.4R3-S5
• 22.1R3-S4
• 22.2R3-S2
• 22.3R3-S1
• 22.4R2
• 23.2R1
• 23.2R1-S2

License

• commercial

Website

• Vendor: https://www.juniper.net/

CPE 2.3info

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CPE 2.2info

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