Heap-Based Buffer Overflow in OpenSC Smart Card Software Driver
CVE-2020-26570

5.5MEDIUM

Key Information:

Vendor

Opensc Project

Status
Opensc
Vendor
CVE Published:
6 October 2020

What is CVE-2020-26570?

The OpenSC smart card software driver contains a vulnerability characterized by a heap-based buffer overflow in the function sc_oberthur_read_file. This issue arises prior to version 0.21.0-rc1, potentially allowing an attacker to exploit the overflow, leading to unauthorized actions or system instability. Users of the affected software should upgrade to the latest version to mitigate this risk.

References

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=24316
x_refsource_MISC
https://github.com/OpenSC/OpenSC/commit/6903aebfddc466d96...
x_refsource_MISC
http://www.openwall.com/lists/oss-security/2020/11/24/4
mailing-listx_refsource_MLIST

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.