Junos OS: SRX Series: A vulnerability in J-Web allows an unauthenticated attacker to upload and download arbitrary files
CVE-2023-36851

5.3MEDIUM

Key Information:

Vendor
Juniper Networks
Status
Junos OS
Vendor
CVE Published:
27 September 2023

Badges

👾 Exploit Exists🦅 CISA Reported📰 News Worthy

Summary

A Missing Authentication for Critical Function vulnerability 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

webauth_operation.php

that doesn't require authentication, an attacker is able to upload and download arbitrary files via J-Web, leading to a loss of

integrity or confidentiality, which may allow chaining to other vulnerabilities.

This issue affects Juniper Networks Junos OS on SRX Series:

21.2 versions prior to 21.2R3-S8;

  • 21.4

versions prior to

21.4R3-S6;

  • 22.1

versions prior to

22.1R3-S5;

  • 22.2

versions prior to

22.2R3-S3;

  • 22.3

versions prior to

22.3R3-S2;

  • 22.4 versions prior to 22,4R2-S2, 22.4R3;
  • 23.2 versions prior to

23.2R1-S2, 23.2R2.

CISA Reported

CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed as being exploited but is not known by the CISA to be used in ransomware campaigns. This is subject to change at pace

The CISA's recommendation is: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Affected Version(s)

Junos OS SRX Series 21.2 < 21.2R3-S8

Junos OS SRX Series 21.4 < 21.4R3-S6

Junos OS SRX Series 22.1 < 22.1R3-S5

News Articles

favicon imageThe Hacker News

CISA Sets a Deadline - Patch Juniper Junos OS Flaws Before November 17

Juniper Junos OS vulnerabilities can lead to remote code execution. CISA has set a Nov 17, 2023 deadline to secure against Juniper Junos OS vulnerabil

1 year ago

References

https://supportportal.juniper.net/JSA72300
vendor-advisorymitigation

EPSS Score

1% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 📰

    First article discovered by The Hacker News

  • 👾

    Exploit known to exist

  • 🦅

    CISA Reported

  • Vulnerability published

  • Vulnerability Reserved

Collectors

NVD DatabaseMitre DatabaseCISA Database1 News Article(s)

Credit

The Juniper SIRT would like to acknowledge and thank watchtowr for responsibly reporting this vulnerability.
.