# CVE-2021-34424: Process memory exposure in Zoom Client and other products > An attacker could potentially expose the state of process memory in Zoom clients and related products, leading to information disclosure. - **Severity:** Medium 5.3 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** No - **Published:** 24 Nov 2021 - **Updated:** 16 Sep 2024 - **Also known as:** GHSA-pv89-7xp2-fhgx ## What is CVE-2021-34424? CVE-2021-34424 is a medium-severity vulnerability in Controllers for Zoom Rooms (for Android, iOS, and Windows), published on 24 Nov 2021. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official description A vulnerability was discovered in the Zoom Client for Meetings (for Android, iOS, Linux, macOS, and Windows) before version 5.8.4, Zoom Client for Meetings for Blackberry (for Android and iOS) before version 5.8.1, Zoom Client for Meetings for intune (for Android and iOS) before version 5.8.4, Zoom Client for Meetings for Chrome OS before version 5.0.1, Zoom Rooms for Conference Room (for Android, AndroidBali, macOS, and Windows) before version 5.8.3, Controllers for Zoom Rooms (for Android, iOS, and Windows) before version 5.8.3, Zoom VDI Windows Meeting Client before version 5.8.4, Zoom VDI Azure Virtual Desktop Plugins (for Windows x86 or x64, IGEL x64, Ubuntu x64, HP ThinPro OS x64) before version 5.8.4.21112, Zoom VDI Citrix Plugins (for Windows x86 or x64, Mac Universal Installer & Uninstaller, IGEL x64, eLux RP6 x64, HP ThinPro OS x64, Ubuntu x64, CentOS x 64, Dell ThinOS) before version 5.8.4.21112, Zoom VDI VMware Plugins (for Windows x86 or x64, Mac Universal Installer & Uninstaller, IGEL x64, eLux RP6 x64, HP ThinPro OS x64, Ubuntu x64, CentOS x 64, Dell ThinOS) before version 5.8.4.21112, Zoom Meeting SDK for Android before version 5.7.6.1922, Zoom Meeting SDK for iOS before version 5.7.6.1082, Zoom Meeting SDK for macOS before version 5.7.6.1340, Zoom Meeting SDK for Windows before version 5.7.6.1081, Zoom Video SDK (for Android, iOS, macOS, and Windows) before version 1.1.2, Zoom on-premise Meeting Connector before version 4.8.12.20211115, Zoom on-premise Meeting Connector MMR before version 4.8.12.20211115, Zoom on-premise Recording Connector before version 5.1.0.65.20211116, Zoom on-premise Virtual Room Connector before version 4.4.7266.20211117, Zoom on-premise Virtual Room Connector Load Balancer before version 2.5.5692.20211117, Zoom Hybrid Zproxy before version 1.0.1058.20211116, and Zoom Hybrid MMR before version 4.6.20211116.131_x86-64 which potentially allowed for the exposure of the state of process memory. This issue could be used to potentially gain insight into arbitrary areas of the product's memory. Weakness: CWE-125 (Out-of-bounds Read) ## Which versions are affected by CVE-2021-34424? It affects 25 products. Products: Zoom Android Meeting Sdk, Zoom Android Video Sdk, Zoom Controllers for Zoom Rooms, Zoom Hybrid Mmr, Zoom Hybrid Zproxy, Zoom Iphone Os Meeting Sdk, Zoom Iphone Os Video Sdk, Zoom Macos Meeting Sdk, Zoom Macos Video Sdk, Zoom Meetings, Zoom Meetings for Blackberry, Zoom Meetings for Chrome Os, Zoom Meetings for Intune, Zoom Rooms for Conference Rooms, Zoom Vdi Azure Virtual Desktop, Zoom Vdi Citrix, Zoom Vdi Vmware, Zoom Virtual Desktop Infrastructure, Zoom Windows Meeting Sdk, Zoom Windows Video Sdk and 5 more. ## How do I fix CVE-2021-34424? No fix has been published for CVE-2021-34424 yet. Limit exposure of the affected software until one is available. ## Is CVE-2021-34424 being exploited? There is no known exploitation of CVE-2021-34424 in the wild and no public exploit code. ## Other vulnerabilities in Controllers for Zoom Rooms (for Android, iOS, and Windows) - [CVE-2021-34423](https://insights.sbomify.com/CVE-2021-34423/): Buffer overflow in Zoom client and other products (high 7.3) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2021-34424 and fix it if it is affected. What it is: CVE-2021-34424 is a medium-severity vulnerability in Controllers for Zoom Rooms (for Android, iOS, and Windows), published on 24 Nov 2021. An attacker can exploit it over the internet without logging in, with no action from the victim. Exploitation: There is no known exploitation of CVE-2021-34424 in the wild and no public exploit code. Affected product: Controllers for Zoom Rooms (for Android, iOS, and Windows). No package-level version data is available, so check the vendor advisory linked from the reference page. Task: 1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies. 2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it. 3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead. 4. Run the tests and summarise what changed and why. 5. If nothing in the project is affected, say so and change nothing. Reference: https://insights.sbomify.com/CVE-2021-34424/ (Markdown: https://insights.sbomify.com/CVE-2021-34424/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2021-34424 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-34424 - OSV: https://osv.dev/vulnerability/CVE-2021-34424 --- From sbomify Insights: https://insights.sbomify.com/CVE-2021-34424/ Summaries are generated and may contain mistakes; the official description above is the record.