Risk | Critical |
Patch available | NO |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2019-19781 |
CWE-ID | CWE-22 |
Exploitation vector | Network |
Public exploit | Vulnerability #1 is being exploited in the wild. |
Vulnerable software Subscribe |
Citrix NetScaler Application Delivery Controller Server applications / Application servers |
Vendor | Citrix |
Security Bulletin
This security bulletin contains one critical risk vulnerability.
EUVDB-ID: #VU24233
Risk: Critical
CVSSv3.1: 9.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:U/RC:C]
CVE-ID: CVE-2019-19781
CWE-ID:
CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences in Citrix NetScaler. A remote attacker can send a specially crafted HTTP request and read arbitrary files or execute commands on the system.
Successful exploitation of the vulnerability may allow remote code execution.
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versionsCitrix NetScaler Application Delivery Controller: 10.5 - 13.0
External linkshttp://packetstormsecurity.com/files/155904/Citrix-Application-Delivery-Controller-Gateway-Remote-Code-Execution.html
http://packetstormsecurity.com/files/155905/Citrix-Application-Delivery-Controller-Gateway-Remote-Code-Execution-Traversal.html
http://packetstormsecurity.com/files/155930/Citrix-Application-Delivery-Controller-Gateway-10.5-Remote-Code-Execution.html
http://badpackets.net/over-25000-citrix-netscaler-endpoints-vulnerable-to-cve-2019-19781/
http://forms.gle/eDf3DXZAv96oosfj6
http://support.citrix.com/article/CTX267027
http://twitter.com/bad_packets/status/1215431625766424576
http://www.kb.cert.org/vuls/id/619785
http://www.ptsecurity.com/ww-en/about/news/citrix-vulnerability-allows-criminals-to-hack-networks-of-80000-companies/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.