CVE-2020-28895 : What You Need to Know
Learn about CVE-2020-28895, an integer overflow vulnerability in Wind River VxWorks memory allocator, leading to memory corruption. Find mitigation steps and the impact of this high-severity issue.
In Wind River VxWorks, a memory allocator vulnerability in calculating memory block size for calloc can lead to memory corruption.
Understanding CVE-2020-28895
What is CVE-2020-28895?
This CVE involves an integer overflow in the memory allocator of Wind River VxWorks when calculating memory block sizes for calloc, resulting in memory corruption due to smaller allocated memory than specified.
The Impact of CVE-2020-28895
The vulnerability has a CVSS base score of 7.3, indicating a high severity level. It can be exploited remotely with low attack complexity, impacting confidentiality, integrity, and availability.
Technical Details of CVE-2020-28895
Vulnerability Description
The issue arises from an integer overflow during memory block size calculation for calloc, leading to memory corruption.
Affected Systems and Versions
- Wind River VxWorks
- All versions are affected
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
Mitigation and Prevention
Immediate Steps to Take
- Apply vendor patches and updates promptly
- Monitor security advisories for any new information
Long-Term Security Practices
- Regularly update and patch software systems
- Conduct security assessments and audits periodically
Patching and Updates
- Wind River VxWorks users should apply the latest patches provided by the vendor