CVE-2021-42782: Buffer Overflow
First published: Thu Oct 21 2021(Updated: )
Last updated 10 April 2025
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/opensc | <0.22.0 | 0.22.0 |
| SUSE OpenSC | <0.22.0 | |
| Red Hat Fedora | =33 | |
| debian/opensc | <=0.21.0-1 | 0.21.0-1+deb11u1 0.23.0-0.3+deb12u2 0.26.1-1 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=2016448
- https://github.com/OpenSC/OpenSC/commit/78cdab94
- https://github.com/OpenSC/OpenSC/commit/7114fb71
- https://github.com/OpenSC/OpenSC/commit/1252aca9
- https://github.com/OpenSC/OpenSC/commit/ae1cf0be
- https://github.com/OpenSC/OpenSC/commit/456ac566
- https://security.gentoo.org/glsa/202209-03
- https://lists.debian.org/debian-lts-announce/2023/06/msg00025.html
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27719
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28855
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=29912
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=30800
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35766
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=36200
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2018908
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2235485
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-42782
- https://nvd.nist.gov/vuln/detail/CVE-2021-42782
- https://launchpad.net/bugs/cve/CVE-2021-42782
- https://security-tracker.debian.org/tracker/CVE-2021-42782
- https://ubuntu.com/security/CVE-2021-42782
- https://github.com/OpenSC/OpenSC/commit/78cdab949f098ad7e593d853229fccf57d749d0c
- https://github.com/OpenSC/OpenSC/commit/1252aca9f10771ef5ba8405e73cf2da50827958f
- https://github.com/OpenSC/OpenSC/commit/ae1cf0be90396fb6c0be95829bf0d3eecbd2fd1c
- https://github.com/OpenSC/OpenSC/commit/7114fb71b54ddfe06ce5dfdab013f4c38f129d14
- https://github.com/OpenSC/OpenSC/commit/456ac566938a1da774db06126a2fa6c0cba514b3
Frequently Asked Questions
What is CVE-2021-42782?
CVE-2021-42782 is a vulnerability found in Opensc before version 0.22.0 that can cause stack buffer overflow issues.
How severe is CVE-2021-42782?
The severity of CVE-2021-42782 is 5.3, which is considered medium.
Which software versions are affected by CVE-2021-42782?
Opensc versions before 0.22.0, Fedora version 33, and Red Hat Opensc package version before 0.22.0 are affected by CVE-2021-42782.
How can CVE-2021-42782 potentially impact programs using Opensc?
CVE-2021-42782 can potentially crash programs using the Opensc library due to stack buffer overflow issues.
Where can I find more information about CVE-2021-42782?
You can find more information about CVE-2021-42782 on the Red Hat Bugzilla and the corresponding GitHub commits.
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