Description
A Missing Authentication for Critical Function vulnerability in Juniper Networks Junos OS on EX Series allows an unauthenticated, network-based attacker to cause limited impact to the file system integrity.
With a specific request to installAppPackage.php that doesn't require authentication an attacker is able to upload arbitrary files via J-Web, leading to a loss of
integrity
for a certain
part of the file system, which may allow chaining to other vulnerabilities.
This issue affects Juniper Networks Junos OS on EX Series:
* All versions prior to 20.4R3-S8;
* 21.1 versions 21.1R1 and later;
* 21.2 versions prior to 21.2R3-S6;
* 21.3 versions
prior to
21.3R3-S5;
* 21.4 versions
prior to
21.4R3-S4;
* 22.1 versions
prior to
22.1R3-S3;
* 22.2 versions
prior to
22.2R3-S1;
* 22.3 versions
prior to
22.3R2-S2, 22.3R3;
* 22.4 versions
prior to
22.4R2-S1, 22.4R3.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Juniper Networks | Junos OS | < 20.4R3-S8, 21.1 – < 21.1*, 21.2 – < 21.2R3-S6, 21.3 – < 21.3R3-S5, 21.4 – < 21.4R3-S4, 22.1 – < 22.1R3-S3, 22.2 – < 22.2R3-S1, 22.3 – < 22.3R2-S2, 22.3R3, 22.4 – < 22.4R2-S1, 22.4R3 | 20.4R3-S8 |
Advisories 1
- WID-SEC-2023-2092 Juniper JUNOS: Mehrere Schwachstellen ermöglichen Codeausführung BSI CERT-Bund (WID) · Sep 28, 2023
References
- https://supportportal.juniper.net/JSA72300 vendor-advisory mitigation