Client redirection via unchecked server-switch hostname
Published May 18, 2022 · Updated Sep 17, 2024
Improper hostname validation in Zoom Client for Meetings before 5.10.0 allows remote authenticated users to redirect clients to a malicious server. A crafted XMPP server-switch control stanza supplies a hostname that the client accepts without binding it to the trusted Zoom service. The attacker must be able to send the target Zoom chat messages; the redirect establishes an adversary-in-the-middle position and contributes to a demonstrated multi-flaw code-execution chain.
Summary
What happened
Improper hostname validation in Zoom Client for Meetings before 5.10.0 allows remote authenticated users to redirect clients to a malicious server. A crafted XMPP server-switch control stanza supplies a hostname that the client accepts without binding it to the trusted Zoom service. The attacker must be able to send the target Zoom chat messages; the redirect establishes an adversary-in-the-middle position and contributes to a demonstrated multi-flaw code-execution chain.
The record
- CVE
- CVE-2022-22787
- Published
- May 18, 2022
- Updated
- Sep 17, 2024
- Vendor
- Zoom Video Communications, Inc.
- Product
- Zoom Client for Meetings for Linux
- Classifications
- CWE-295, T1557
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- May 18, 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
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=unspecified <5.10.0
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
- Zoom Remote Code Execution with XMPP Stanza Smugglingproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Reported exploitation
- Project Zero Zoom XMPP exploit chainexploit chain
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