Arbitrary file write via unchecked ZIP extraction
Published Jun 8, 2020 · Updated Aug 4, 2024
Path traversal in Zoom Client for Meetings 4.6.10 and 4.6.11 allows remote authenticated users to write arbitrary files via chat. The code-snippet handler automatically extracts downloaded ZIP content without validating member paths, allowing traversal outside its random preview directory. The broadest write requires a recipient to save a disguised shared file before a second snippet message reuses its identifier; constrained binary planting otherwise occurs automatically.
Summary
What happened
Path traversal in Zoom Client for Meetings 4.6.10 and 4.6.11 allows remote authenticated users to write arbitrary files via chat. The code-snippet handler automatically extracts downloaded ZIP content without validating member paths, allowing traversal outside its random preview directory. The broadest write requires a recipient to save a disguised shared file before a second snippet message reuses its identifier; constrained binary planting otherwise occurs automatically.
The record
- CVE
- CVE-2020-6110
- Published
- Jun 8, 2020
- Updated
- Aug 4, 2024
- Vendor
- Zoom Video Communications, Inc.
- Product
- Zoom Client for Meetings
- Classifications
- CWE-22, T1203
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 8, 2020CVE 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
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=Zoom Client Application 4.6.10 Zoom Client Application 4.6.11
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.
Weakness, pattern, technique
Public exploit references
- Cisco Talos code-snippet extraction proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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