CVE-2024-39525

Junos OS and Junos OS Evolved: When BGP traceoptions is enabled, receipt of specially crafted BGP packet causes RPD crash

Description

An Improper Handling of Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network-based attacker sending a specific BGP packet to cause rpd to crash and restart, resulting in a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue only affects systems with BGP traceoptions enabled and requires a BGP session to be already established.  Systems without BGP traceoptions enabled are not affected by this issue. This issue affects iBGP and eBGP, and both IPv4 and IPv6 are affected by this vulnerability. This issue affects: Junos OS:  * All versions before 21.2R3-S8,  * from 21.4 before 21.4R3-S8,  * from 22.2 before 22.2R3-S4,  * from 22.3 before 22.3R3-S4, * from 22.4 before 22.4R3-S3,  * from 23.2 before 23.2R2-S1,  * from 23.4 before 23.4R2;  Junos OS Evolved:  * All versions before 21.2R3-S8-EVO,  * from 21.4-EVO before 21.4R3-S8-EVO,  * from 22.2-EVO before 22.2R3-S4-EVO,  * from 22.3-EVO before 22.3R3-S4-EVO, * from 22.4-EVO before 22.4R3-S3-EVO,  * from 23.2-EVO before 23.2R2-S1-EVO,  * from 23.4-EVO before 23.4R2-EVO.

Remediation

Solution:

  • The following software releases have been updated to resolve this specific issue: Junos OS 21.2R3-S8, 21.4R3-S8, 22.2R3-S4, 22.3R3-S4*, 22.4R3-S3, 23.2R2-S1, 23.4R2, 24.2R1, and all subsequent releases. Junos OS Evolved 21.2R3-S8-EVO, 21.4R3-S8-EVO, 22.2R3-S4-EVO, 22.3R3-S4-EVO*, 22.4R3-S3-EVO, 23.2R2-S1-EVO, 23.4R2-EVO, 24.2R1-EVO, and all subsequent releases. *Future release

Workaround:

  • Disable BGP traceoptions if they are not being used for active troubleshooting.

Category

8.7
CVSS
Severity: High
CVSS 4.0 •
CVSS 3.1 •
EPSS 0.21%
Vendor Advisory juniper.net
Affected: Juniper Networks Junos OS
Affected: Juniper Networks Junos OS Evolved
Published at:
Updated at:

References

Frequently Asked Questions

What is the severity of CVE-2024-39525?
CVE-2024-39525 has been scored as a high severity vulnerability.
How to fix CVE-2024-39525?
To fix CVE-2024-39525: The following software releases have been updated to resolve this specific issue: Junos OS 21.2R3-S8, 21.4R3-S8, 22.2R3-S4, 22.3R3-S4*, 22.4R3-S3, 23.2R2-S1, 23.4R2, 24.2R1, and all subsequent releases. Junos OS Evolved 21.2R3-S8-EVO, 21.4R3-S8-EVO, 22.2R3-S4-EVO, 22.3R3-S4-EVO*, 22.4R3-S3-EVO, 23.2R2-S1-EVO, 23.4R2-EVO, 24.2R1-EVO, and all subsequent releases. *Future release
Is CVE-2024-39525 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-39525 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-39525?
CVE-2024-39525 affects Juniper Networks Junos OS, Juniper Networks Junos OS Evolved.
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