Root privilege escalation via filename-only signature validation
Published Aug 15, 2022 · Updated Sep 17, 2024
Improper signature verification in Zoom Client for Meetings for macOS 5.7.3 through 5.11.4 allows local users to gain root privileges. The updater's signature check accepts a malicious package when its filename matches Zoom's signing-certificate name, then runs that package as root. Exploitation requires local low-privileged access and an updater invocation; successful exploitation grants unrestricted root-level control.
Summary
What happened
Improper signature verification in Zoom Client for Meetings for macOS 5.7.3 through 5.11.4 allows local users to gain root privileges. The updater's signature check accepts a malicious package when its filename matches Zoom's signing-certificate name, then runs that package as root. Exploitation requires local low-privileged access and an updater invocation; successful exploitation grants unrestricted root-level control.
The record
- CVE
- CVE-2022-28756
- Published
- Aug 15, 2022
- Updated
- Sep 17, 2024
- Vendor
- Zoom Video Communications, Inc.
- Product
- Zoom Client for Meetings for MacOS
- Classifications
- CWE-347, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 15, 2022CVE publishedPublication date reported by the CVE source.
- Sep 17, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=next of 5.7.3 <unspecified
- Affected versionversion=unspecified <5.11.5
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
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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