Juniper Junos OS: 2024-07 Security Bulletin: Junos OS and Junos OS Evolved: Malformed BGP UPDATE causes RPD crash (JSA75726) (CVE-2024-39552)

Juniper Junos OS: 2024-07 Security Bulletin: Junos OS and Junos OS Evolved: Malformed BGP UPDATE causes RPD crash (JSA75726) (CVE-2024-39552)

Severity

8

CVSS

(AV:N/AC:L/Au:N/C:N/I:N/A:C)

Published

07/10/2024

Created

07/12/2024

Added

07/11/2024

Modified

01/28/2025

Description

An Improper Handling of Exceptional Conditions vulnerability in the routing protocol daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows a network based, unauthenticated attacker to cause the RPD process to crash leading to a Denial of Service (DoS). When a malformed BGP UPDATE packet is received over an established BGP session, RPD crashes and restarts. Continuous receipt of the malformed BGP UPDATE messages will create a sustained Denial of Service (DoS) condition for impacted devices. This issue affects eBGP and iBGP, in both IPv4 and IPv6 implementations.This issue requires a remote attacker to have at least one established BGP session. This issue affects: Juniper Networks Junos OS: *All versions earlier than 20.4R3-S9; *21.2 versions earlier than 21.2R3-S7; *21.3 versions earlier than 21.3R3-S5; *21.4 versions earlier than 21.4R3-S6; *22.1 versions earlier than 22.1R3-S4; *22.2 versions earlier than 22.2R3-S3; *22.3 versions earlier than 22.3R3-S2; *22.4 versions earlier than 22.4R3; *23.2 versions earlier than 23.2R2. Juniper Networks Junos OS Evolved: *All versions earlier than 21.2R3-S7; *21.3-EVO versions earlier than 21.3R3-S5; *21.4-EVO versions earlier than 21.4R3-S8; *22.1-EVO versions earlier than 22.1R3-S4; *22.2-EVO versions earlier than 22.2R3-S3; *22.3-EVO versions earlier than 22.3R3-S2; *22.4-EVO versions earlier than 22.4R3; *23.2-EVO versions earlier than 23.2R2.

Solution(s)

• juniper-junos-os-upgrade-latest

References

• https://attackerkb.com/topics/cve-2024-39552
• CVE - 2024-39552
• JSA75726