Citrix Workspace App for Linux: Improper Access Control
CVE-2022-21825 is a high-severity improper access control vulnerability in Citrix Workspace App for Linux, with a CVSS 3.1 base score of 7.8 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. Affected Citrix Workspace App for Linux versions: Citrix Workspace App for Linux 2112 and later. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.22% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Workspace to 2112 or a later version.
- Read the advisory on support.citrix.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Citrix Workspace App for Linux | Citrix Workspace App for Linux | Citrix Workspace App for Linux 2112 and later | Not stated |
| Citrix | Workspace | 2012 up to, but not including, 2112 | 2112 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.8 | High | NVD |
| CVSS 2.0 | 4.6 | Medium | NVD |
Official description
An Improper Access Control vulnerability exists in Citrix Workspace App for Linux 2012 - 2111 with App Protection installed that can allow an attacker to perform local privilege escalation.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Access Control
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
How developers prevent this class of flaw
- Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
- Compartmentalize the system to have safe areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area. Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Advisories
Recent Improper Access Control vulnerabilities
- 9.8 Critical severity
Citrix ShareFile Improper Access Control Exploited
- 9.8 Critical severity
QNAP Helpdesk Improper Access Control Exploited
- 9.8 Critical severity
- 7.5 High severity
- 9.8 Critical severity
Oracle Java SE and JRockit Unspecified Exploited
- 5.0 Medium severity
Oracle Java SE Integrity Check Exploited
Spotted an error? Tell us.