CVE-2021-35103 Memory corruption in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking
Out-of-bounds write in Qualcomm Snapdragon firmware allows attackers to execute arbitrary code or escalate privileges via improper timer validation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-35103?
CVE-2021-35103 is a high-severity memory corruption vulnerability in Qualcomm Ar8035 Firmware, published on 1 Apr 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Possible out of bound write due to improper validation of number of timer values received from firmware while syncing timers in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking
Weakness: CWE-787
Which versions are affected by CVE-2021-35103?
It affects 149 products.
Products include Qualcomm Ar8035 Firmware, Qualcomm Ar9380 Firmware, Qualcomm Csr8811 Firmware, Qualcomm Csrb31024 Firmware, Qualcomm Ipq4018 Firmware, Qualcomm Ipq4019 Firmware and 143 more.
How do I fix CVE-2021-35103?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-35103 being exploited?
There is no known exploitation of CVE-2021-35103 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
- CVE-2024-45569 Improper Validation of Array Index in WLAN Host Communication
- CVE-2024-21473 Improper Input Validation in WIN SON
- CVE-2023-28582 Buffer Copy Without Checking Size of Input in Data Modem
- CVE-2023-43552 Use After Free in WLAN Host Communication
Sources
Also known as 3033509, A-209481110, ASB-A-209481110, GHSA-5fq8-p5p9-5g3g.