Remote Command Execution Vulnerability in Citrix NetScaler SD-WAN Devices
CVE-2017-6316

9.8CRITICAL

Key Information:

Vendor
Citrix
Status
Netscaler Sd-wan
Vendor
CVE Published:
20 July 2017

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 85%🦅 CISA Reported

Summary

An identified security flaw in Citrix NetScaler SD-WAN devices allows remote attackers to execute arbitrary shell commands with root privileges. This occurs through manipulation of the CGISESSID cookie, granting unauthorized command execution capabilities. It's critical for users of affected versions to mitigate this vulnerability by applying necessary updates and implementing security measures to prevent exploitation.

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 updates per vendor instructions.

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.

CVE-2017-6316 - Proof of Concept

CVE-2017-6316 - Proof of Concept

References

http://www.securitytracker.com/id/1039019
vdb-entryx_refsource_SECTRACK
https://support.citrix.com/article/CTX225990
x_refsource_CONFIRM
https://www.exploit-db.com/exploits/42345/
exploitx_refsource_EXPLOIT-DB

EPSS Score

85% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 👾

    Exploit known to exist

  • 🦅

    CISA Reported

  • 🟡

    Public PoC available

  • Vulnerability published

  • Vulnerability Reserved

.