CVE-2021-42782
MEDIUMCVSS 5.3/10EPSS 2.60%
Last modified
CVE-2021-42782 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. Stack buffer overflow issues were found in Opensc before version 0.22.0 in various places that could potentially crash programs using the library.. EPSS estimates a 2.60% chance of exploitation in the next 30 days.
Description
Stack buffer overflow issues were found in Opensc before version 0.22.0 in various places that could potentially crash programs using the library.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Opensc Project | Opensc | < 0.22.0 |
| Fedoraproject | Fedora | 33 |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2016448Issue Tracking, Mailing List, Patch, Third Party Advisory
- https://github.com/OpenSC/OpenSC/commit/1252aca9Patch, Third Party Advisory
- https://github.com/OpenSC/OpenSC/commit/456ac566Patch, Third Party Advisory
- https://github.com/OpenSC/OpenSC/commit/7114fb71Patch, Third Party Advisory
- https://github.com/OpenSC/OpenSC/commit/78cdab94Patch, Third Party Advisory
- https://github.com/OpenSC/OpenSC/commit/ae1cf0bePatch, Third Party Advisory
- https://security.gentoo.org/glsa/202209-03Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2016448Issue Tracking, Mailing List, Patch, Third Party Advisory
- https://github.com/OpenSC/OpenSC/commit/1252aca9Patch, Third Party Advisory
- https://github.com/OpenSC/OpenSC/commit/456ac566Patch, Third Party Advisory
- https://github.com/OpenSC/OpenSC/commit/7114fb71Patch, Third Party Advisory
- https://github.com/OpenSC/OpenSC/commit/78cdab94Patch, Third Party Advisory
- https://github.com/OpenSC/OpenSC/commit/ae1cf0bePatch, Third Party Advisory
- https://security.gentoo.org/glsa/202209-03Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-42782?
Stack buffer overflow issues were found in Opensc before version 0.22.0 in various places that could potentially crash programs using the library.
How severe is CVE-2021-42782?
CVE-2021-42782 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 2.60% probability of exploitation in the next 30 days.
How do I fix CVE-2021-42782?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-42782?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST