CVE-2020-8195KEV · OVERDUECWE-20

Citrix ADC, Gateway, and SD-WAN WANOP Appliance Information Disclosure Vulnerability

Medium · published July 10, 2020

Patch now

The score understates this — it's already being exploited

CVSS calls it medium at 6.5. It is confirmed in active exploitation. It sits in the 98.4th percentile for exploit probability.

1635
days past CISA
deadline
CVSS v3.1
6.5
EPSS
33%
Percentile
98.4
In the wild
Confirmed
What it is

⚠️ An improperly validated input might just spill the beans! This vulnerability in Citrix ADC and Gateway could let low-privileged users access information they shouldn’t see. 🚨 Think of it like a restaurant where the waiter mistakenly gives a customer the wrong menu, allowing them to peek at exclusive dishes meant only for VIPs. This oversight lets those with less access gain insight into sensitive information. This means that a low-privileged user could potentially gain unauthorized visibility into limited information, risking sensitive data exposure. While not catastrophic, this could lead to unintentional data leaks or an attacker gathering information for larger exploits down the line.

Put simply

Think of it like a restaurant where the waiter mistakenly gives a customer the wrong menu, allowing them to peek at exclusive dishes meant only for VIPs. This oversight lets those with less access gain insight into sensitive information. CVE-2020-8195 involves improper input validation in Citrix ADC and Gateway, which allows low-privileged users to view limited information they shouldn’t have access to. This affects specific versions of the software, including various Citrix SDWAN WAN-OP releases.

What to do

This means that a low-privileged user could potentially gain unauthorized visibility into limited information, risking sensitive data exposure. While not catastrophic, this could lead to unintentional data leaks or an attacker gathering information for larger exploits down the line. Update Citrix ADC and Gateway to version 13.0-58.30, 12.1-57.18, 12.0-63.21, 11.1-64.14, or 10.5-70.18 to remediate the issue. For Citrix SDWAN WAN-OP, update to versions 11.1.1a, 11.0.3d, or 10.2.7. You've got this! Implement these updates and watch your security superhero cape flutter in the wind! 🦸‍♂️✨

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.33029 · 98.4th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2020-07-10T15:39Z
KEV added
2021-11-03 · due 2022-05-03
EPSS history
Timeline
  • 03 NOV 00:00Z
    Added to CISA KEV — remediate by May 3
    kev
  • 10 JUL 15:39Z
    Improper input validation in Citrix ADC and Citrix Gateway versions before 13.0-58.30, 12.1-57.18, 12.0-63.21, 11.1-64.14 and 10.5-70.18 and Citrix SDWAN…
    cvelistv5