CVE-2019-6962
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedA shell injection issue in cosa_wifi_apis.c in the RDK RDKB-20181217-1 CcspWifiAgent module allows attackers with login credentials to execute arbitrary shell commands under the CcspWifiSsp process (running as root) if the platform was compiled with the ENABLE_FEATURE_MESHWIFI macro. The attack is conducted by changing the Wi-Fi network password to include crafted escape characters. This is related to the WebUI module.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceA shell injection vulnerability in cosa_wifi_apis.c within the CcspWifiAgent module allows authenticated attackers to execute arbitrary shell commands by embedding shell metacharacters in the Wi-Fi network password field. The vulnerability only manifests when the platform is compiled with the ENABLE_FEATURE_MESHWIFI macro, and the CcspWifiSsp process runs as root, granting full system compromise upon successful exploitation.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= rdkb-20181217-1CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- High
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify the installed RDK-B firmware versionCheck the system version file or run a version command appropriate to the RDK-B device (often found in /version or via a device info API)Affected if The firmware version matches rdkb-20181217-1 exactly
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Verify if ENABLE_FEATURE_MESHWIFI was enabled at compile timeCheck the build configuration, Makefile, or compiled binary for the ENABLE_FEATURE_MESHWIFI preprocessor macro (typically found in build config files, .config, or via strings command on the CcspWifiAgent binary)Affected if The ENABLE_FEATURE_MESHWIFI compile-time flag is present/enabled in the build
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Confirm CcspWifiSsp is running as rootCheck the process list for the CcspWifiSsp process and inspect its effective user ID (for example, run 'ps aux | grep CcspWifiSsp' and check the UID column)Affected if The CcspWifiSsp process runs with root privileges (UID 0)
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Check for cosa_wifi_apis.c in the CcspWifiAgent moduleLocate the CcspWifiAgent component on the filesystem (commonly in /usr/ccsp/wifi or similar) and verify the presence of cosa_wifi_apis.c or its compiled binaryAffected if The cosa_wifi_apis.c source file is present in the CcspWifiAgent module
The device is affected if it runs Rdkb Ccsppandm version rdkb-20181217-1 AND was compiled with ENABLE_FEATURE_MESHWIFI enabled AND the CcspWifiSsp process runs as root, allowing shell metacharacters in the Wi-Fi password field to be executed.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataDisable the ENABLE_FEATURE_MESHWIFI compile-time flag if the feature is not required; otherwise, implement strict input validation and sanitization on the Wi-Fi password parameter to neutralize shell metacharacters before passing it to system calls, and apply any vendor-provided patches.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2019-6962 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2019-6962 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Version or environment caveats, and links to real fixes
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