CVE-2021-30307 Denial of service in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT

What is CVE-2021-30307?

CVE-2021-30307 is a high-severity denial of service vulnerability in Qualcomm Ar8035 Firmware, published on 13 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Possible denial of service due to improper validation of DNS response when DNS client requests with PTR, NAPTR or SRV query type in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT

Weakness: CWE-617

Which versions are affected by CVE-2021-30307?

It affects 86 products.

Products include Qualcomm Ar8035 Firmware, Qualcomm Csrb31024 Firmware, Qualcomm Qca6174a Firmware, Qualcomm Qca6390 Firmware, Qualcomm Qca6391 Firmware, Qualcomm Qca6426 Firmware and 80 more.

How do I fix CVE-2021-30307?

No fix has been published for CVE-2021-30307 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2021-30307 being exploited?

There is no known exploitation of CVE-2021-30307 in the wild and no public exploit code.

Other vulnerabilities in Qualcomm Ar8035 Firmware

• CVE-2023-33106 Qualcomm Multiple Chipsets Use of Out-of-Range Pointer Offset Exploited High 8.4
• CVE-2024-45569 Improper Validation of Array Index in WLAN Host Communication Critical 9.8
• CVE-2024-21473 Improper Input Validation in WIN SON Critical 9.8
• CVE-2023-28582 Buffer Copy Without Checking Size of Input in Data Modem Critical 9.8
• CVE-2023-43552 Use After Free in WLAN Host Communication Critical 9.8

All Qualcomm Ar8035 Firmware vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-vchm-32r9-6qh2.