CVE-2020-8860: (Pwn2Own) Samsung Galaxy S10 Call Control Setup Stack-based Buffer Overflow Remote Code Execution Vulnerability
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Samsung Galaxy S10 Firmware G973FXXS3ASJA, O(8.x), P(9.0), Q(10.0) devices with Exynos chipsets. User interaction is required to exploit this vulnerability in that the target must answer a phone call. The specific flaw exists within the Call Control Setup messages. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length, stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the baseband processor. Was ZDI-CAN-9658.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch ZDI-CAN-9658 - Operational
For Samsung Galaxy S10 (G973FXXS3ASJA with Exynos) and Galaxy S10 firmware lines O(8.x), P(9.0), Q(10.0), apply the remediation associated with ZDI-CAN-9658 to address the Call Control Setup message stack-based buffer overflow in baseband code.
Event History
Frequently Asked Questions
What is the severity of CVE-2020-8860?
CVE-2020-8860 is considered a high severity vulnerability due to its potential for remote code execution.
How do I fix CVE-2020-8860?
To fix CVE-2020-8860, ensure your Samsung Galaxy S10 or Android device is updated with the latest security patches from Samsung.
What devices are affected by CVE-2020-8860?
CVE-2020-8860 affects Samsung Galaxy S10 devices and Android versions 8.0, 8.1, 9.0, and 10.0.
What type of attack exploits CVE-2020-8860?
CVE-2020-8860 can be exploited through targeted phone calls where user interaction is required to trigger the vulnerability.
Who is responsible for addressing the CVE-2020-8860 vulnerability?
The responsibility for addressing CVE-2020-8860 lies with the device manufacturer, in this case, Samsung, to provide necessary updates.