CVE-2020-26570 : What You Need to Know
Learn about CVE-2020-26570, a critical heap-based buffer overflow vulnerability in OpenSC's Oberthur smart card software driver before 0.21.0-rc1, allowing attackers to execute arbitrary code or cause denial of service.
OpenSC before 0.21.0-rc1 is affected by a heap-based buffer overflow in the Oberthur smart card software driver.
Understanding CVE-2020-26570
This CVE involves a critical vulnerability in the OpenSC software driver.
What is CVE-2020-26570?
The Oberthur smart card software driver in OpenSC before version 0.21.0-rc1 is susceptible to a heap-based buffer overflow in the 'sc_oberthur_read_file' function.
The Impact of CVE-2020-26570
This vulnerability could allow an attacker to execute arbitrary code or cause a denial of service by exploiting the buffer overflow.
Technical Details of CVE-2020-26570
Details about the vulnerability and affected systems.
Vulnerability Description
The issue arises from a heap-based buffer overflow in the 'sc_oberthur_read_file' function of the Oberthur smart card software driver in OpenSC.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions: All versions before 0.21.0-rc1
Exploitation Mechanism
Attackers can exploit this vulnerability by crafting a malicious input that triggers the buffer overflow, potentially leading to arbitrary code execution or a denial of service.
Mitigation and Prevention
Ways to address and prevent the CVE-2020-26570 vulnerability.
Immediate Steps to Take
- Update OpenSC to version 0.21.0-rc1 or later to mitigate the vulnerability.
- Monitor security advisories for any patches or workarounds.
Long-Term Security Practices
- Regularly update software and firmware to the latest versions.
- Implement proper input validation and boundary checks in software development.
Patching and Updates
- Apply security patches promptly to address known vulnerabilities and enhance system security.