CVE-2020-10060 : What You Need to Know
Learn about CVE-2020-10060 affecting Zephyr versions 2.1.0 and later. This vulnerability could lead to crashes, denial of service, or information leaks. Find mitigation steps and prevention measures here.
CVE-2020-10060, titled 'UpdateHub Might Dereference An Uninitialized Pointer,' affects Zephyr versions 2.1.0 and later. The vulnerability could lead to a crash, denial of service, or information leak.
Understanding CVE-2020-10060
This CVE involves a vulnerability in the UpdateHub component of Zephyr, potentially allowing attackers to exploit uninitialized stack memory.
What is CVE-2020-10060?
The issue arises from accessing objects in the output structure after JSON parsing in updatehub_probe. If the JSON has less than two elements, it could reference uninitialized stack memory, leading to various security risks.
The Impact of CVE-2020-10060
The vulnerability has a CVSS base score of 8 (High severity) with a network attack vector. It could result in a crash, denial of service, or information leakage, requiring compromise of the server if the fix in CVE-2020-10059 is applied.
Technical Details of CVE-2020-10060
The technical details of this CVE include:
Vulnerability Description
In updatehub_probe, accessing objects from the output structure after JSON parsing can lead to uninitialized stack memory access, potentially causing crashes or information leaks.
Affected Systems and Versions
- Affected Product: Zephyr
- Vendor: Zephyrproject-rtos
- Versions: 2.1.0 and later, including version 2.2.0 and later
Exploitation Mechanism
The vulnerability can be exploited by accessing objects in the output structure after JSON parsing, particularly when the JSON contains less than two elements.
Mitigation and Prevention
To address CVE-2020-10060, consider the following steps:
Immediate Steps to Take
- Apply the provided fix in CVE-2020-10059
- Monitor for any unusual activities or crashes in the system
Long-Term Security Practices
- Regularly update and patch Zephyr to the latest version
- Conduct security audits and code reviews to identify similar vulnerabilities
Patching and Updates
- Implement patches provided by Zephyrproject-rtos
- Stay informed about security advisories and updates from the vendor