CVE-2019-19781

Citrix Application Delivery Controller (ADC), Gateway, and SD-WAN WANOP Appliance: ADC, Gateway, and SD-WAN WANOP Appliance Code Execution

As of , CVE-2019-19781 in Citrix Application Delivery Controller (ADC), Gateway, and SD-WAN WANOP Appliance is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch this week.

Exploited
Yes: CISA listed it on 3 November 2021
US federal deadline
3 May 2022181 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Known
EPSS score
0.99Higher than 99% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
EPSS when listed
Not availableCISA listed it before 4 February 2022, where the EPSS files we read begin.
Public exploit
2 Metasploit modules and 3 Exploit-DB entries
Fix
No vendor link in CISA's entry

What CISA says to do

Apply updates per vendor instructions.

CISA's required action

What the flaw is

Citrix ADC, Citrix Gateway, and multiple Citrix SD-WAN WANOP appliance models contain an unspecified vulnerability that could allow an unauthenticated attacker to perform code execution.

CISA's description

An issue was discovered in Citrix Application Delivery Controller (ADC) and Gateway 10.5, 11.1, 12.0, 12.1, and 13.0. They allow Directory Traversal.

The CVE record's description, from mitre

CVE published
27 December 2019
Assigned by
mitre
CVSS
9.8 Critical (CVSS 3.1, from CISA-ADP)
CWE-22
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CISA SSVC, exploitation
active
CISA SSVC, automatable
yes
CISA SSVC, technical impact
total

Timeline

  1. The CVE record was published.
  2. Exploit-DB published an exploit (EDB-ID 47901).
  3. Exploit-DB published an exploit (EDB-ID 47913).
  4. Exploit-DB published an exploit (EDB-ID 47930).
  5. CISA added it to its list of exploited vulnerabilities.
  6. The US federal deadline to fix it.

Public exploits

Facts from Metasploit's module list and Exploit-DB's index; we never copy exploit code.

Application Delivery Controller (ADC), Gateway, and SD-WAN WANOP Appliance: other exploited entries

VulnerabilityProductOur groupListedDeadlineEPSS
CVE-2020-8193ADC, Gateway, and SD-WAN WANOP Appliance Authorization BypassCitrix Application Delivery Controller (ADC), Gateway, and SD-WAN WANOP AppliancePatch this weekEPSS 0.880.88
CVE-2020-8195ADC, Gateway, and SD-WAN WANOP Appliance Information DisclosureCitrix Application Delivery Controller (ADC), Gateway, and SD-WAN WANOP AppliancePatch soon0.33
CVE-2020-8196ADC, Gateway, and SD-WAN WANOP Appliance Information DisclosureCitrix Application Delivery Controller (ADC), Gateway, and SD-WAN WANOP AppliancePatch soon0.26

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