Multiple vulnerabilities in Citrix NetScaler Application Delivery Controller and NetScaler Gateway
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 5 |
| CVE-ID | CVE-2018-6810 CVE-2018-6811 CVE-2018-6809 CVE-2018-6808 CVE-2018-6186 |
| CWE-ID | CWE-22 CWE-79 CWE-264 CWE-200 CWE-918 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
Citrix NetScaler Application Delivery Controller Server applications / Application servers Citrix NetScaler Gateway Server applications / Application servers Citrix NetScaler Server applications / Remote management servers, RDP, SSH |
| Vendor | Citrix |
Security Bulletin
This security bulletin contains information about 5 vulnerabilities.
1) Path traversal
EUVDB-ID: #VU10825
Risk: Low
CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2018-6810
CWE-ID:
CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.
The weakness exists due to path traversal. A remote attacker can send a specially-crafted URL request containing directory traversal sequences and view arbitrary files.
Install update from vendor's website.
Vulnerable software versionsCitrix NetScaler Application Delivery Controller: 10.5 - 12.0
Citrix NetScaler Gateway: 10.5 - 12.0
CPE2.3- cpe:2.3:a:citrix:citrix_netscaler_application_delivery_controller:10.5:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_application_delivery_controller:10.5e:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_application_delivery_controller:11.0:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_gateway:10.5:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_gateway:10.5e:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_gateway:11.0:*:*:*:*:*:*:*
https://support.citrix.com/article/CTX232161
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?
No. We are not aware of malware exploiting this vulnerability.
2) Cross-site scripting
EUVDB-ID: #VU10826
Risk: Low
CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]
CVE-ID: CVE-2018-6811
CWE-ID:
CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Exploit availability: No
DescriptionThe disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
MitigationInstall update from vendor's website.
Vulnerable software versionsCitrix NetScaler Gateway: 10.5 - 12.0
Citrix NetScaler Application Delivery Controller: 10.5 - 12.0
CPE2.3- cpe:2.3:a:citrix:citrix_netscaler_gateway:10.5:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_gateway:10.5e:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_gateway:11.0:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_application_delivery_controller:10.5:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_application_delivery_controller:10.5e:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_application_delivery_controller:11.0:*:*:*:*:*:*:*
https://support.citrix.com/article/CTX232161
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?
No. We are not aware of malware exploiting this vulnerability.
3) Privilege escalation
EUVDB-ID: #VU10827
Risk: Low
CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2018-6809
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a remote authenticated attacker to gain elevated privileges on the target system.
The weakness exists due to unknown reasons. A remote attacker can gain root privileges.
Install update from vendor's website.
Vulnerable software versionsCitrix NetScaler Application Delivery Controller: 10.5 - 12.0
Citrix NetScaler Gateway: 10.5 - 12.0
CPE2.3- cpe:2.3:a:citrix:citrix_netscaler_application_delivery_controller:10.5:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_application_delivery_controller:10.5e:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_application_delivery_controller:11.0:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_gateway:10.5:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_gateway:10.5e:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_gateway:11.0:*:*:*:*:*:*:*
https://support.citrix.com/article/CTX232161
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
4) Information disclosure
EUVDB-ID: #VU10828
Risk: Low
CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2018-6808
CWE-ID:
CWE-200 - Exposure of sensitive information to an unauthorized actor
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to obtain potentially sensitive information.
The vulnerability exists due to unknown reasons. A remote attacker can download arbitrary files and gain access to potentially sensitive information.
MitigationInstall update from vendor's website.
Vulnerable software versionsCitrix NetScaler Application Delivery Controller: 10.5 - 12.0
Citrix NetScaler Gateway: 10.5 - 12.0
CPE2.3- cpe:2.3:a:citrix:citrix_netscaler_application_delivery_controller:10.5:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_application_delivery_controller:10.5e:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_application_delivery_controller:11.0:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_gateway:10.5:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_gateway:10.5e:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:citrix_netscaler_gateway:11.0:*:*:*:*:*:*:*
https://support.citrix.com/article/CTX232161
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?
No. We are not aware of malware exploiting this vulnerability.
5) Server-side request forgery
EUVDB-ID: #VU10829
Risk: Low
CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2018-6186
CWE-ID:
CWE-918 - Server-Side Request Forgery (SSRF)
Exploit availability: No
DescriptionThe vulnerability allows a remote authenticated attacker to perform SSRF-attack on the target system.
The weakness exists due to insufficient validation of user-supplied input. A remote attacker can gain access to the nsroot account, execute commands with root privileges on the target system and perform server-side request forgery attack.
Mitigation
Install update from vendor's website.
Vulnerable software versionsCitrix NetScaler: 12.0 Build 53.13
CPE2.3 External linkshttps://support.citrix.com/article/CTX232161
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
