Product Affected

This issue affects all versions of Junos OS earlier than 21.2R3-S7, 21.4, 22.1, 22.2, 22.3, 22.4, 23.2. This issue affects all versions of Junos OS Evolved earlier than 21.4R3-S5-EVO, 22.1-EVO, 22.2-EVO, 22.3-EVO, 22.4-EVO, 23.2-EVO.
High
CVSS 3.1: 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 4.0: 8.2 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Problem

A Stack-based Buffer Overflow vulnerability in the Routing Protocol Daemon (rpd) component of Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause an rpd crash, leading to Denial of Service (DoS).

On all Junos OS and Junos OS Evolved platforms, when EVPN is configured, and a specific EVPN type-5 route is received via BGP, rpd crashes and restarts. Continuous receipt of this specific route will lead to a sustained Denial of Service (DoS) condition.

This issue affects:

Junos OS:

  • all versions before 21.2R3-S7,
  • from 21.4 before 21.4R3-S5,
  • from 22.1 before 22.1R3-S4,
  • from 22.2 before 22.2R3-S2,
  • from 22.3 before 22.3R3-S1,
  • from 22.4 before 22.4R3,
  • from 23.2 before 23.2R2.

Junos OS Evolved:

  • all versions before 21.4R3-S5-EVO,
  • from 22.1-EVO before 22.1R3-S4-EVO,
  • from 22.2-EVO before 22.2R3-S2-EVO,
  • from 22.3-EVO before 22.3R3-S1-EVO,
  • from 22.4-EVO before 22.4R3-EVO,
  • from 23.2-EVO before 23.2R2-EVO.

For this issue to occur, EVPN needs to be enabled.
  [protocols evpn]
 

Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

This issue was discovered during production use.

This issue has been assigned CVE-2024-30394.

Solution

The following software releases have been updated to resolve this specific issue:

Junos OS: 21.2R3-S7, 21.4R3-S5, 22.1R3-S4, 22.2R3-S2, 22.3R3-S1, 22.4R3, 23.2R2, 23.4R1, and all subsequent releases.

Junos OS Evolved: 21.4R3-S5-EVO, 22.1R3-S4-EVO, 22.2R3-S2-EVO, 22.3R3-S1-EVO, 22.4R3-EVO, 23.2R2-EVO, 23.4R1-EVO, and all subsequent releases.

This issue is being tracked as 1740634 which is visible on the Customer Support website.

Note: Juniper SIRT's policy is not to evaluate releases which are beyond End of Engineering (EOE) or End of Life (EOL).

Workaround

There are no available workarounds for this issue.

Severity Assessment

Information for how Juniper Networks uses CVSS can be found at KB 16446 [juniper.net] "Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories.

Modification History

2024-04-10: Initial Publication
2024-04-12: Added "Junos OS Evolved" in the title and corrected few typos in the description
2024-09-13: Minor formatting change to cvss field.

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