# CVE-2020-3704: Denial of service in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer Electronics Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon IoT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wired Infrastructure and Networking > A malformed Bluetooth connection request can cause a deadlock in Qualcomm Snapdragon devices, leading to a denial of service. - **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** No - **Published:** 2 Nov 2020 - **Updated:** 4 Aug 2024 - **Also known as:** GHSA-6qvv-mgvr-jc3q ## What is CVE-2020-3704? CVE-2020-3704 is a high-severity denial of service vulnerability in Qualcomm Apq8009 Firmware, published on 2 Nov 2020. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official description u'While processing invalid connection request PDU which is nonstandard (interval or timeout is 0) from central device may lead peripheral system enter into dead lock state.(This CVE is equivalent to InvalidConnectionRequest(CVE-2019-19193) mentioned in sweyntooth paper)' in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer Electronics Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon IoT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wired Infrastructure and Networking in Agatti, APQ8009, APQ8017, APQ8053, AR9344, Bitra, IPQ5018, Kamorta, MDM9607, MDM9640, MDM9650, MSM8996AU, Nicobar, QCA6174A, QCA6390, QCA6574AU, QCA9377, QCA9886, QCM6125, QCN7605, QCS404, QCS405, QCS605, QCS610, QRB5165, Rennell, SA415M, SA515M, Saipan, SC7180, SC8180X, SDA845, SDM660, SDM670, SDM710, SDM845, SDM850, SDX20, SDX24, SDX55, SM6150, SM7150, SM8150, SM8250, SXR1130, SXR2130 Weakness: CWE-667 (Improper Locking) ## Which versions are affected by CVE-2020-3704? It affects 46 products. Products: Qualcomm Agatti Firmware, Qualcomm Apq8009 Firmware, Qualcomm Apq8017 Firmware, Qualcomm Apq8053 Firmware, Qualcomm Ar9344 Firmware, Qualcomm Bitra Firmware, Qualcomm Ipq5018 Firmware, Qualcomm Kamorta Firmware, Qualcomm Mdm9607 Firmware, Qualcomm Mdm9640 Firmware, Qualcomm Mdm9650 Firmware, Qualcomm Msm8996au Firmware, Qualcomm Nicobar Firmware, Qualcomm Qca6174a Firmware, Qualcomm Qca6390 Firmware, Qualcomm Qca6574au Firmware, Qualcomm Qca9377 Firmware, Qualcomm Qca9886 Firmware, Qualcomm Qcm6125 Firmware, Qualcomm Qcn7605 Firmware and 26 more. ## How do I fix CVE-2020-3704? No fix has been published for CVE-2020-3704 yet. Limit exposure of the affected software until one is available. ## Is CVE-2020-3704 being exploited? There is no known exploitation of CVE-2020-3704 in the wild and no public exploit code. ## Other vulnerabilities in Qualcomm Apq8009 Firmware - [CVE-2020-3654](https://insights.sbomify.com/CVE-2020-3654/): Memory corruption in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables (critical 9.8) - [CVE-2020-3673](https://insights.sbomify.com/CVE-2020-3673/): Memory corruption in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables (critical 9.8) - [CVE-2020-3692](https://insights.sbomify.com/CVE-2020-3692/): Memory corruption in Snapdragon Auto, Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile (critical 9.8) - [CVE-2020-3670](https://insights.sbomify.com/CVE-2020-3670/): Memory corruption in Snapdragon Auto, Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables (critical 9.1) - [CVE-2020-11125](https://insights.sbomify.com/CVE-2020-11125/): Memory corruption in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking (high 7.8) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2020-3704 and fix it if it is affected. What it is: CVE-2020-3704 is a high-severity denial of service vulnerability in Qualcomm Apq8009 Firmware, published on 2 Nov 2020. 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-2020-3704 in the wild and no public exploit code. Affected product: Qualcomm Apq8009 Firmware. 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-2020-3704/ (Markdown: https://insights.sbomify.com/CVE-2020-3704/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2020-3704 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-3704 - OSV: https://osv.dev/vulnerability/CVE-2020-3704 --- From sbomify Insights: https://insights.sbomify.com/CVE-2020-3704/ Summaries are generated and may contain mistakes; the official description above is the record.