CVE-2020-3703 Memory corruption in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer Electronics Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon IoT, Snapdragon Mobile, Snapdragon Voice & Music

Critical 9.8 Published 2 Nov 2020 Updated 4 Aug 2024

Attackers can cause buffer over-reads in Bluetooth firmware via malformed opcodes, leading to crashes or data exposure on affected Qualcomm devices.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-3703?

CVE-2020-3703 is a critical memory corruption vulnerability in Qualcomm Apq8053 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'Buffer over-read issue in Bluetooth peripheral firmware due to lack of check for invalid opcode and length of opcode received from central device(This CVE is equivalent to Link Layer Length Overfow issue (CVE-2019-16336,CVE-2019-17519) and Silent Length Overflow issue(CVE-2019-17518) 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 in APQ8053, APQ8076, AR9344, Bitra, Kamorta, MDM9206, MDM9207C, MDM9607, MSM8905, MSM8917, MSM8937, MSM8940, MSM8953, Nicobar, QCA6174A, QCA9377, QCM2150, QCM6125, QCS404, QCS405, QCS605, QCS610, QM215, Rennell, SC8180X, SDM429, SDM439, SDM450, SDM630, SDM632, SDM636, SDM660, SDM670, SDM710, SDM845, SDX20, SDX24, SM6150, SM7150, SM8150, SXR1130

Weakness: CWE-20, CWE-125

Which versions are affected by CVE-2020-3703?

It affects 41 products.

Products include Qualcomm Apq8053 Firmware, Qualcomm Apq8076 Firmware, Qualcomm Ar9344 Firmware, Qualcomm Bitra Firmware, Qualcomm Kamorta Firmware, Qualcomm Mdm9206 Firmware and 35 more.

How do I fix CVE-2020-3703?

No fix has been published for CVE-2020-3703 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2020-3703 being exploited?

There is no known exploitation of CVE-2020-3703 in the wild and no public exploit code.

All Qualcomm Apq8053 Firmware vulnerabilities

Sources

Also known as GHSA-3j9x-r2wg-gfhv.