CVE-2020-1631KEV · OVERDUECWE-22CWE-73

Out of Cycle Security Advisory: Junos OS: Security vulnerability in J-Web and web based (HTTP/HTTPS) services

High · published May 4, 2020

Patch now

Confirmed exploited, and the score agrees

CVSS calls it high at 8.8. It is confirmed in active exploitation. It sits in the 92.0th percentile for exploit probability.

1653
days past CISA
deadline
CVSS v3.1
8.8
EPSS
5%
Percentile
92.0
In the wild
Confirmed
What it is

🚨 An unauthenticated attacker could waltz right in, accessing sensitive files or injecting commands in Juniper's HTTP/HTTPS services! 🔥 Think of this vulnerability as a sneaky delivery person who can peek inside packages on your doorstep without your knowledge, potentially snatching away confidential documents. If J-Web is in use, it’s like giving that delivery person a key to your house! An attacker could exploit this flaw to read sensitive configuration files or inject commands, leading to administrator-level access if someone is logged into J-Web. This scenario could be absolutely devastating, allowing unauthorized users to seize control of critical network functions.

Put simply

Think of this vulnerability as a sneaky delivery person who can peek inside packages on your doorstep without your knowledge, potentially snatching away confidential documents. If J-Web is in use, it’s like giving that delivery person a key to your house! This vulnerability enables local file inclusion (LFI) and path traversal through the HTTP/HTTPS service in Junos OS, allowing attackers to read world-readable files or execute commands with limited privileges, depending on the context of the exploit.

What to do

An attacker could exploit this flaw to read sensitive configuration files or inject commands, leading to administrator-level access if someone is logged into J-Web. This scenario could be absolutely devastating, allowing unauthorized users to seize control of critical network functions. To mitigate this risk, first disable HTTP/HTTPS services if not needed. If they must be enabled, ensure J-Web is not in use and apply the latest patches available for your Junos OS version. Regularly check the logs for suspicious activity using the provided commands to monitor for potential breaches. You've got this! By following these steps, you can protect your network and maintain your superhero status in security! 🛡️

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.04865 · 92.0th percentile
Weaknesses
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'); CWE-73 · External Control of File Name or Path
Published
2020-05-04T09:25Z
KEV added
2022-03-25 · due 2022-04-15
EPSS history
Timeline
  • 25 MAR 00:00Z
    Added to CISA KEV — remediate by Apr 15
    kev
  • 04 MAY 09:25Z
    Out of Cycle Security Advisory: Junos OS: Security vulnerability in J-Web and web based (HTTP/HTTPS) services
    cvelistv5