Vulnerability in Amazon AWS Client Vpn
CVE-2022-25165
An issue was discovered in Amazon AWS VPN Client 2.0.0. A TOCTOU race condition exists during the validation of VPN configuration files. This allows parameters outside of the AWS VPN Client allow list to be injected into the configuration file prior to the AWS VPN Client service (running as SYSTEM) processing the file. Dangerous arguments can be injected by a low-level user such as log, which allows an arbitrary destination to be specified for writing log files. This leads to an arbitrary file write as SYSTEM with partial control over the files content. This can be abused to cause an elevation of privilege or denial of service.
Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (42.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000
Affected products
- Amazon AWS Client Vpn — versions 2.0.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/RhinoSecurityLabs/CVEs (Exploit, Third Party Advisory)
- rhinosecuritylabs.com/aws/cve-2022-25165-aws-vpn-client/ (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-25165?
- CVE-2022-25165 is a high-severity vulnerability in Amazon AWS Client Vpn, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 7.0/10. Published 2022-04-14.
- How severe is CVE-2022-25165?
- High severity. CVSS v3 base score is 7.0 out of 10.
- Is CVE-2022-25165 known to be exploited?
- 18 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.