Local process-memory disclosure via shared-memory array index
Published Jan 24, 2022 · Updated Aug 4, 2024
Out-of-bounds read in TeamViewer Desktop Clients before 15.21.2 allows local users to disclose memory from the service process. Modification of shared memory by a low-privileged user causes the service to read beyond an allocated array and write the resulting data to its log file. Exploitation requires local low-privileged code execution; the disclosed memory supports a separate exploit chain, but this flaw alone does not execute code as SYSTEM.
Summary
What happened
Out-of-bounds read in TeamViewer Desktop Clients before 15.21.2 allows local users to disclose memory from the service process. Modification of shared memory by a low-privileged user causes the service to read beyond an allocated array and write the resulting data to its log file. Exploitation requires local low-privileged code execution; the disclosed memory supports a separate exploit chain, but this flaw alone does not execute code as SYSTEM.
The record
- CVE
- CVE-2021-35005
- Published
- Jan 24, 2022
- Updated
- Aug 4, 2024
- Vendor
- TeamViewer
- Product
- TeamViewer Desktop Clients
- Classifications
- CWE-129, CWE-125
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 24, 2022CVE publishedPublication date reported by the CVE source.
- Aug 4, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=15.18.5.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo