CVE-2023-44204

Junos OS and Junos OS Evolved: The rpd will crash upon receiving a malformed BGP UPDATE message

Published Oct 12, 2023 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description

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 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;






Remediation

Vendor Solution

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.


Vendor Workaround

There are no known workarounds for this issue.

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
EUVD EUVD EUVD-2023-48563 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 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;
References
History
Type Values Removed Values Added
CPEs cpe:2.3:o:juniper:junos:21.4:r3-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.2:r1-s1:*:*:*:*:*:*
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
juniper
Published
Updated
Sep 17, 2024, 4:09 PM
Reserved
Sep 26, 2023, 7:30 PM
Status
Analyzed
Published
Oct 13, 2023, 12:15 AM
Modified
Jun 17, 2026, 6:27 AM