CVE-2024-39560 | Vulnerability Database

NVD	https://nvd.nist.gov/vuln/detail/CVE-2024-39560
CWE	https://cwe.mitre.org/data/definitions/755.html

An Improper Handling of Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a logically adjacent downstream RSVP neighbor to cause kernel memory exhaustion, leading to a kernel crash, resulting in a Denial of Service (DoS).

The kernel memory leak and eventual crash will be seen when the downstream RSVP neighbor has a persistent error which will not be corrected.

System kernel memory can be monitored through the use of the show system statistics kernel memory command as shown below:

user@router> show system statistics kernel memory Memory Size (kB) Percentage When Active 753092 18.4% Now Inactive 574300 14.0% Now Wired 443236 10.8% Now Cached 1911204 46.6% Now Buf 32768 0.8% Now Free 385072 9.4% Now Kernel Memory Now Data 312908 7.6% Now Text 2560 0.1% Now …

This issue affects: Junos OS:

All versions before 20.4R3-S9,
All versions of 21.2,
from 21.4 before 21.4R3-S5,
from 22.1 before 22.1R3-S5,
from 22.2 before 22.2R3-S3,
from 22.3 before 22.3R3-S2,
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-S5-EVO,
from 22.2-EVO before 22.2R3-S3-EVO,
from 22.3-EVO before 22.3R3-S2-EVO,
from 22.4-EVO before 22.4R3-EVO,
from 23.2-EVO before 23.2R2-EVO.

Weakness

The product does not handle or incorrectly handles an exceptional condition.

References

https://supportportal.juniper.net/JSA83020