Vulnerability Monitor

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CVE-2021-42780

A use after return issue was found in Opensc before version 0.22.0 in insert_pin function that could potentially crash programs using the library.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.3, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and limited availability for affected systems. Impacting 3 products from opensc_project, from fedoraproject, from redhat organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2022, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2022-04-18T17:15:16.243

Last Modified

2025-11-03T22:15:52.507

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.3 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Secondary
CWE-252
Type: Primary
CWE-252

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	opensc_project	opensc	< 0.22.0	Yes
Operating System	fedoraproject	fedora	33	Yes
Operating System	redhat	enterprise_linux	7.0	Yes

References

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28383 Issue Tracking, Mailing List, Patch, Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=2016139 Issue Tracking, Patch, Third Party Advisory ([email protected])
https://github.com/OpenSC/OpenSC/commit/5df913b7 Patch, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2023/06/msg00025.html ([email protected])
https://security.gentoo.org/glsa/202209-03 Third Party Advisory ([email protected])
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28383 Issue Tracking, Mailing List, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=2016139 Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/OpenSC/OpenSC/commit/5df913b7 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2023/06/msg00025.html (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2024/12/msg00026.html (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/202209-03 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For opensc_project's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.