Home/CVE/Citrix Multiple Products Remote Code Execution Vulnerability
CVE

CVE-2017-6316

Citrix Multiple Products Remote Code Execution Vulnerability

Citrix NetScaler SD-WAN devices through v9.1.2.26.561201 allow remote attackers to execute arbitrary shell commands as root via a CGISESSID cookie. On CloudBridge (the former name of NetScaler SD-WAN) devices, the cookie name was CAKEPHP rather than CGISESSID.

CRITICAL · CVSS 9.8 ⚠ CISA KEV EPSS 0.87898
Act now
  • Listed on CISA KEV (known exploited in the wild)
  • SSVC exploitation status: active
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 1% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬢

Required Remediation

Apply updates per vendor instructions.

▤

Affected Products & Versions

1
citrix netscaler sd-wan<= 9.1.2.26.561201
⚠

Public Exploits & PoCs

4
webappsCitrix CloudBridge - 'CAKEPHP' Cookie Command Injection2017-07-19
webappsNetscaler SD-WAN 9.1.2.26.561201 - Command Injection (Metasploit)2017-07-19
pocwww.exploit-db.com · 42345www.exploit-db.com
pocwww.exploit-db.com · 42346www.exploit-db.com
◈

Detection Rules (IDS/IPS)

2
et-openET EXPLOIT Citrix NetScaler SD-WAN 9.1.2.26.561201 Devices CVE-2017-6316 (Outbound)attempted-admin
et-openET EXPLOIT Citrix NetScaler SD-WAN 9.1.2.26.561201 Devices CVE-2017-6316 (Inbound)attempted-admin
Open rulesets (ET Open, Snort Community, abuse.ch) link to source. Commercial rulesets are reference-only.
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Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD20 Jul 2017 · 04:29 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
active
Automatable
yes
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

1
cisaKEV-CVE-2017-6316
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.securityfocus.com/bid/99943Broken LinkThird Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1039019Broken LinkThird Party AdvisoryVDB Entry
https://support.citrix.com/article/CTX225990Permissions Required
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-6316US Government Resource
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