An Improper Validation of Syntactic Correctness of Input vulnerability in Routing Protocol Daemon (rpd) Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network based attacker to cause a Denial of Service (DoS).
When a malformed BGP UPDATE packet is received over an established BGP session, the rpd crashes and restarts.
This issue requires an attacker to have an established BGP session to a system affected by the issue. This issue affects both eBGP and iBGP implementations.
This issue affects:
Juniper Networks Junos OS
21.4 versions prior to 21.4R3-S4;
22.1 versions prior to 22.1R3-S3;
22.2 versions prior to 22.2R3-S2;
22.3 versions prior to 22.3R2-S2, 22.3R3;
22.4 versions prior to 22.4R2-S1, 22.4R3;
23.2 versions prior to 23.2R1, 23.2R2;
Juniper Networks Junos OS Evolved
21.4 versions prior to 21.4R3-S5-EVO;
22.1 versions prior to 22.1R3-S3-EVO;
22.2 versions prior to 22.2R3-S3-EVO;
22.3 versions prior to 22.3R2-S2-EVO;
22.4 versions prior to 22.4R3-EVO;
23.2 versions prior to 23.2R2-EVO;
The following minimal configuration is required:[protocols bgp]
[protocols bgp]
Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
This issue was found during internal product security testing or research.
This issue has been assigned CVE-2023-44204.
The following software releases have been updated to resolve this specific issue:
Junos OS: 21.4R3-S4, 22.1R3-S3, 22.2R3-S2, 22.3R2-S2, 22.3R3, 22.4R2-S1, 22.4R3, 23.1R2, 23.2R1, 23.2R2, 23.3R1 and all subsequent releases.
Junos OS Evolved: 22.1R3-S3-EVO, 22.3R2-S2-EVO, 22.4R3-EVO, 23.1R2-EVO, 23.2R2-EVO, 23.3R1-EVO and all subsequent releases.
This issue is being tracked as PR 1731803 which is visible on the Customer Support website.
Note: Juniper SIRT's policy [juniper.net] is not to evaluate releases which are beyond End of Engineering (EOE) or End of Life (EOL).
There are no known workarounds for this issue.
2023-10-11: Initial Publication