CVE-2024-39552: Junos OS and Junos OS Evolved: Malformed BGP UPDATE causes RPD crash
First published: Thu Jul 11 2024(Updated: )
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.
Credit: sirt@juniper.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Juniper Junos | <20.4R3-S9<21.2R3-S7<21.3R3-S5<21.4R3-S6<22.1R3-S4<22.2R3-S3<22.3R3-S2<22.4R3<23.2R2 | |
| Juniper Networks Junos OS | <21.2R3-S7<21.3R3-S5<21.4R3-S8<22.1R3-S4<22.2R3-S3<22.3R3-S2<22.4R3<23.2R2 |
Remedy
The following software releases have been updated to resolve this specific issue: Junos OS: 20.4R3-S9, 21.2R3-S7, 21.3R3-S5, 21.4R3-S5, 22.1R3-S4, 22.2R3-S3, 22.3R3-S2, 22.4R3, 23.2R2, 23.4R1, and all subsequent releases. Junos OS Evolved: 21.2R3-S7-EVO, 21.3R3-S5-EVO, 21.4R3-S8-EVO, 22.1R3-S4-EVO, 22.2R3-S3-EVO, 22.3R3-S2-EVO, 22.4R3-EVO, 23.2R2-EVO, 23.4R1-EVO, and all subsequent releases.
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2024-39552?
CVE-2024-39552 has been categorized as a high severity vulnerability due to its potential to cause Denial of Service (DoS).
How do I fix CVE-2024-39552?
To fix CVE-2024-39552, upgrade to a fixed version of Juniper Networks Junos OS or Junos OS Evolved as specified in the security advisory.
What systems are affected by CVE-2024-39552?
CVE-2024-39552 affects specific versions of both Juniper Networks Junos OS and Junos OS Evolved, including versions up to 23.2R2.
Can CVE-2024-39552 be exploited remotely?
Yes, CVE-2024-39552 can be exploited by a network-based, unauthenticated attacker.
What impact does CVE-2024-39552 have on my network?
Exploitation of CVE-2024-39552 can lead to an unintentional crash of the routing protocol daemon, resulting in Denial of Service for network services.
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