Vulnerability · Published Jul 11, 2024 · Assigned by juniper
CVE-2024-39550Junos OS: MX Series with SPC3 line card: Port flaps causes rtlogd memory leak leading to Denial of Service
Medium 6.5
In plain English
A medium-severity memory leak in Junos OS from Juniper Networks. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities).
Official description
A Missing Release of Memory after Effective Lifetime vulnerability in the rtlogd process of Juniper Networks Junos OS on MX Series with SPC3 allows an unauthenticated, adjacent attacker to trigger internal events cause ( which can be done by repeated port flaps) to cause a slow memory leak, ultimately leading to a Denial of Service (DoS). Memory can only be recovered by manually restarting rtlogd process. The memory usage can be monitored using the below command. user@host> show system processes extensive | match rtlog This issue affects Junos OS on MX Series with SPC3 line card: * from 21.2R3 before 21.2R3-S8, * from 21.4R2 before 21.4R3-S6, * 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-S1, * from 23.2 before 23.2R2, * from 23.4 before 23.4R2.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Juniper Networks | Junos OS | 21.2R3 – before 21.2R3-S821.4R2 – before 21.4R3-S622.1 – before 22.1R3-S522.2 – before 22.2R3-S322.3 – before 22.3R3-S222.4 – before 22.4R3-S123.2 – before 23.2R223.4 – before 23.4R2 |
Weakness: CWE-401 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://supportportal.juniper.net/JSA83012 vendor-advisory