CVE-2019-12991

Citrix SD-WAN and NetScaler: Command Injection

As of , CVE-2019-12991 in Citrix SD-WAN and NetScaler 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 25 March 2022
US federal deadline
15 April 202221 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Not known to CISA
EPSS score
0.74Higher than 99% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
EPSS when listed
0.14 on 25 March 2022EPSS on the day CISA listed it.
Public exploit
1 Exploit-DB entry (1 verified)
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

Authenticated Command Injection in Citrix SD-WAN Appliance and NetScaler SD-WAN Appliance.

CISA's description

Citrix SD-WAN 10.2.x before 10.2.3 and NetScaler SD-WAN 10.0.x before 10.0.8 have Improper Input Validation (issue 5 of 6).

The CVE record's description, from mitre

CVE published
16 July 2019
Assigned by
mitre
CVSS
8.8 High (CVSS 3.1, from CISA-ADP)
CWE-78
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CISA SSVC, exploitation
active
CISA SSVC, automatable
no
CISA SSVC, technical impact
total

Timeline

  1. Exploit-DB published an exploit (EDB-ID 47112).
  2. The CVE record was published.
  3. CISA added it to its list of exploited vulnerabilities.
  4. 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.

SD-WAN and NetScaler: other exploited entries

VulnerabilityProductOur groupListedDeadlineEPSS
CVE-2019-12989SQL InjectionCitrix SD-WAN and NetScalerPatch this weekEPSS 0.95; verified Exploit-DB entry0.95

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