# CVE-2021-1887: Denial of service in Snapdragon Wired Infrastructure and Networking

> An assertion failure in the WLAN subsystem allows attackers to cause a denial of service via the Wi-Fi Fine Timing Measurement protocol.

- **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:** 13 Jul 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-mvxx-fm5q-h4f3

## What is CVE-2021-1887?

CVE-2021-1887 is a high-severity denial of service vulnerability in Qualcomm Ar9380 Firmware, published on 13 Jul 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An assertion can be reached in the WLAN subsystem while using the Wi-Fi Fine Timing Measurement protocol in Snapdragon Wired Infrastructure and Networking

Weakness: CWE-617 (Reachable Assertion)

## Which versions are affected by CVE-2021-1887?

It affects 39 products.


Products: Qualcomm Ar7420 Firmware, Qualcomm Ar9380 Firmware, Qualcomm Csr8811 Firmware, Qualcomm Ipq4018 Firmware, Qualcomm Ipq4019 Firmware, Qualcomm Ipq4028 Firmware, Qualcomm Ipq4029 Firmware, Qualcomm Ipq8064 Firmware, Qualcomm Ipq8065 Firmware, Qualcomm Ipq8069 Firmware, Qualcomm Ipq8074 Firmware, Qualcomm Qca6310 Firmware, Qualcomm Qca6320 Firmware, Qualcomm Qca6335 Firmware, Qualcomm Qca6428 Firmware, Qualcomm Qca6438 Firmware, Qualcomm Qca7500 Firmware, Qualcomm Qca7520 Firmware, Qualcomm Qca7550 Firmware, Qualcomm Qca9531 Firmware and 19 more.

## How do I fix CVE-2021-1887?

No fix has been published for CVE-2021-1887 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-1887 being exploited?

There is no known exploitation of CVE-2021-1887 in the wild and no public exploit code.

## Other vulnerabilities in Qualcomm Ar9380 Firmware

- [CVE-2020-11256](https://insights.sbomify.com/CVE-2020-11256/): Memory corruption in Snapdragon Wired Infrastructure and Networking (high 8.8)
- [CVE-2020-11257](https://insights.sbomify.com/CVE-2020-11257/): Memory corruption in Snapdragon Wired Infrastructure and Networking (high 8.8)
- [CVE-2020-11258](https://insights.sbomify.com/CVE-2020-11258/): Memory corruption in Snapdragon Wired Infrastructure and Networking (high 8.8)
- [CVE-2020-11259](https://insights.sbomify.com/CVE-2020-11259/): Memory corruption in Snapdragon Wired Infrastructure and Networking (high 8.8)
- [CVE-2020-11266](https://insights.sbomify.com/CVE-2020-11266/): Information disclosure in Snapdragon Wired Infrastructure and Networking (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-1887 and fix it if it is affected.

What it is: CVE-2021-1887 is a high-severity denial of service vulnerability in Qualcomm Ar9380 Firmware, published on 13 Jul 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-2021-1887 in the wild and no public exploit code.

Affected product: Qualcomm Ar9380 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-2021-1887/ (Markdown: https://insights.sbomify.com/CVE-2021-1887/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-1887
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-1887
- OSV: https://osv.dev/vulnerability/CVE-2021-1887

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-1887/
Summaries are generated and may contain mistakes; the official description above is the record.