Description
A Stack-based Buffer Overflow vulnerability in Flow Processing Daemon (flowd) of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause Denial of Service (DoS).
On all Junos OS MX Series platforms with SPC3 and MS-MPC/-MIC, when URL filtering is enabled and a specific URL request is received and processed, flowd will crash and restart. Continuous reception of the specific URL request will lead to a sustained Denial of Service (DoS) condition.
This issue affects:
Junos OS:
* all versions before 21.2R3-S6,
* from 21.3 before 21.3R3-S5,
* from 21.4 before 21.4R3-S5,
* from 22.1 before 22.1R3-S3,
* from 22.2 before 22.2R3-S1,
* from 22.3 before 22.3R2-S2, 22.3R3,
* from 22.4 before 22.4R2-S1, 22.4R3.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Juniper Networks | Junos OS | < 21.2R3-S6, 21.3 – < 21.3R3-S5, 21.4 – < 21.4R3-S5, 22.1 – < 22.1R3-S3, 22.2 – < 22.2R3-S1, 22.3 – < 22.3R2-S2, 22.3R3, 22.4 – < 22.4R2-S1, 22.4R3 | 21.2R3-S6 |
Advisories 1
- WID-SEC-2024-0855 Juniper Produkte: Mehrere Schwachstellen BSI CERT-Bund (WID) · Apr 10, 2024
References
- https://supportportal.juniper.net/JSA79092 vendor-advisory
- https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L technical-description