PT-2023-4457 · Juniper Networks · Junos
Published
2023-08-17
·
Updated
2025-10-24
·
CVE-2023-36846
CVSS v2.0
10
High
| Vector | AV:N/AC:L/Au:N/C:C/I:C/A:C |
Name of the Vulnerable Software and Affected Versions
Juniper Networks Junos OS on SRX Series versions prior to 20.4R3-S8
Juniper Networks Junos OS on SRX Series version 21.1R1 and later
Juniper Networks Junos OS on SRX Series versions prior to 21.2R3-S6
Juniper Networks Junos OS on SRX Series versions prior to 21.3R3-S5
Juniper Networks Junos OS on SRX Series versions prior to 21.4R3-S5
Juniper Networks Junos OS on SRX Series versions prior to 22.1R3-S3
Juniper Networks Junos OS on SRX Series versions prior to 22.2R3-S2
Juniper Networks Junos OS on SRX Series versions prior to 22.3R2-S2, 22.3R3
Juniper Networks Junos OS on SRX Series versions prior to 22.4R2-S1, 22.4R3
Description
A Missing Authentication for Critical Function issue in Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause limited impact to the file system integrity. With a specific request to
user.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. It is estimated that around 11086 devices worldwide, including 130 in a specific country, may be affected.Recommendations
For versions prior to 20.4R3-S8, update to version 20.4R3-S8 or later.
For version 21.1R1 and later, update to a version that includes the fix for this issue.
For versions prior to 21.2R3-S6, update to version 21.2R3-S6 or later.
For versions prior to 21.3R3-S5, update to version 21.3R3-S5 or later.
For versions prior to 21.4R3-S5, update to version 21.4R3-S5 or later.
For versions prior to 22.1R3-S3, update to version 22.1R3-S3 or later.
For versions prior to 22.2R3-S2, update to version 22.2R3-S2 or later.
For versions prior to 22.3R2-S2, 22.3R3, update to a version that includes the fix for this issue.
For versions prior to 22.4R2-S1, 22.4R3, update to a version that includes the fix for this issue.
As a temporary workaround, consider disabling the J-Web interface until a patch is available. Restrict access to the vulnerable module to minimize the risk of exploitation. Avoid using the
user.php endpoint in the affected API until the issue is resolved.Exploit
Fix
RCE
Unrestricted File Upload
Missing Authentication
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Related Identifiers
Affected Products
Junos