{"UnAuthenticated Remote Code Execution Vulnerability in Juniper Networks Junos OS"}
CVE-2023-36845
Key Information:
- Vendor
- Juniper Networks
- Status
- Vendor
- CVE Published:
- 17 August 2023
Badges
Summary
A PHP External Variable Modification vulnerability in J-Web of Juniper Networks Junos OS on EX Series
and SRX Series
allows an unauthenticated, network-based attacker to remotely execute code.
Using a crafted request which sets the variable PHPRC an attacker is able to modify the PHP execution environment allowing the injection und execution of code.
This issue affects Juniper Networks Junos OS on EX Series
and
SRX Series:
- All versions prior to
20.4R3-S9;
- 21.1 versions 21.1R1 and later;
- 21.2 versions prior toΒ 21.2R3-S7;
- 21.3 versions prior toΒ 21.3R3-S5;
- 21.4 versions prior to 21.4R3-S5;
- 22.1 versions
prior to
22.1R3-S4;
- 22.2 versions
prior to
22.2R3-S2;
- 22.3 versions
prior to
22.3R2-S2, 22.3R3-S1;
- 22.4 versions
prior to
22.4R2-S1, 22.4R3;
- 23.2 versions prior to 23.2R1-S1, 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 as recent news articles suggest the vulnerability is being used by ransomware groups.
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 EX Series 0 < 20.4R3-S9
Junos OS EX Series 21.1 < 21.1*
Junos OS EX Series 21.2 < 21.2R3-S7
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.
News Articles
Thousands of Juniper firewalls are open to serious attack
Although a patch has been available for a month now
1 year ago
The Hacker NewsNew Juniper Junos OS Flaws Expose Devices to Remote Attacks - Patch Now
JuniperNetworks released an "out-of-cycle" security patch for Junos OS. Attackers could remotely execute code by chaining these vulnerabilities.
1 year ago
References
EPSS Score
85% chance of being exploited in the next 30 days.
CVSS V3.1
Timeline
- π‘
Public PoC available
- π¦
CISA Reported
- π°
Used in Ransomware
- πΎ
Exploit known to exist
- π°
First article discovered by The Hacker News
Vulnerability published
Vulnerability Reserved