2023-10 Security Bulletin: Junos OS and Junos OS Evolved: Receipt of a specific genuine PIM packet causes RPD crash (CVE-2023-44175)

Product Affected

This issue affects all versions of Junos OS and Junos OS Evolved.

Severity

Medium

Severity Assessment (CVSS) Score

7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Problem

A Reachable Assertion vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows to send specific genuine PIM packets to the device resulting in rpd to crash causing a Denial of Service (DoS).

Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition.

Note: This issue is not noticed when all the devices in the network are Juniper devices.

This issue affects Juniper Networks:

Junos OS:

All versions prior to 20.4R3-S7;
21.2 versions prior to 21.2R3-S5;
21.3 versions prior to 21.3R3-S4;
21.4 versions prior to 21.4R3-S4;
22.1 versions prior to 22.1R3-S4;
22.2 versions prior to 22.2R3;
22.3 versions prior to 22.3R3;
22.4 versions prior to 22.4R3.

Junos OS Evolved:

All versions prior to 22.3R3-EVO;
22.4-EVO versions prior to 22.4R3-EVO;
23.2-EVO versions prior to 23.2R1-EVO.

This issue is applicable to devices where PIM is enabled.

[protocols pim]
[protocols pim rp config]
[protocols pim interface <all/interface-name>]

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

This issue was seen during production usage.

This issue has been assigned CVE-2023-44175.

Solution

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

Junos OS: 20.4R3-S7, 21.2R3-S5, 21.3R3-S4, 21.4R3-S4, 22.1R3-S4, 22.2R3, 22.3R2-S1, 22.3R3, 22.4R2, 22.4R3, 23.2R1, and all subsequent releases.

Junos OS Evolved: 22.3R3-EVO, 22.4R3-EVO, 23.2R1-EVO, and all subsequent releases.

This issue is being tracked as PR 1719596 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).

Workaround

There are no known 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