CVE-2024-21619

Junos OS: SRX Series and EX Series: J-Web - unauthenticated access to temporary files containing sensitive information

Description

A Missing Authentication for Critical Function vulnerability combined with a Generation of Error Message Containing Sensitive Information vulnerability in J-Web of Juniper Networks Junos OS on SRX Series and EX Series allows an unauthenticated, network-based attacker to access sensitive system information. When a user logs in, a temporary file which contains the configuration of the device (as visible to that user) is created in the /cache folder. An unauthenticated attacker can then attempt to access such a file by sending a specific request to the device trying to guess the name of such a file. Successful exploitation will reveal configuration information. This issue affects Juniper Networks Junos OS on SRX Series and EX Series: * All versions earlier than 20.4R3-S9; * 21.2 versions earlier than 21.2R3-S7; * 21.3 versions earlier than 21.3R3-S5; * 21.4 versions earlier than 21.4R3-S6; * 22.1 versions earlier than 22.1R3-S5; * 22.2 versions earlier than 22.2R3-S3; * 22.3 versions earlier than 22.3R3-S2; * 22.4 versions earlier than 22.4R3; * 23.2 versions earlier than 23.2R1-S2, 23.2R2.

Remediation

Solution:

  • The following software releases have been updated to resolve this specific issue: 20.4R3-S9, 21.2R3-S7*, 21.3R3-S5, 21.4R3-S6*, 22.1R3-S5*, 22.2R3-S3*, 22.3R3-S2*, 22.4R2-S2, 22.4R3*, 23.2R1-S2, 23.2R2*, 23.4R1, and all subsequent releases. *Pending Publication

Workaround:

  • Disable J-Web, or limit access to only trusted hosts.

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.12%
Vendor Advisory juniper.net
Affected: Juniper Networks Junos OS
Published at:
Updated at:

References

Link Tags
https://supportportal.juniper.net/JSA76390 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2024-21619?
CVE-2024-21619 has been scored as a medium severity vulnerability.
How to fix CVE-2024-21619?
To fix CVE-2024-21619: The following software releases have been updated to resolve this specific issue: 20.4R3-S9, 21.2R3-S7*, 21.3R3-S5, 21.4R3-S6*, 22.1R3-S5*, 22.2R3-S3*, 22.3R3-S2*, 22.4R2-S2, 22.4R3*, 23.2R1-S2, 23.2R2*, 23.4R1, and all subsequent releases. *Pending Publication
Is CVE-2024-21619 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-21619 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-21619?
CVE-2024-21619 affects Juniper Networks Junos OS.
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