Description
OpenSC before 0.20.0-rc1 has an out-of-bounds access of an ASN.1 Octet string in asn1_decode_entry in libopensc/asn1.c.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | opensc | 0.20.0-1 | — |
| Debian 13 | opensc | 0.20.0-1 | — |
| Debian 12 | opensc | 0.20.0-1 | — |
| Debian 9 | opensc | 0.16.0-3+deb9u2 | DLA-2832-1 |
| Debian 8 | opensc | 0.16.0-3+deb8u1 | DLA-1916-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | opensc | 0.20.0-3ubuntu0.1~esm1 | USN-5281-1 |
| Ubuntu Pro 18.04 LTS | opensc | 0.17.0-3ubuntu0.1~esm1 | USN-5281-1 |
| Ubuntu Pro 16.04 LTS | opensc | 0.15.0-1ubuntu1+esm1 | USN-5281-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | opensc | 0.20.0-2.el8 | RHSA-2020:4483 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP2 | opensc | 0.19.0-3.7.1 | SUSE-SU-2021:1168-1 |
| SLES 15 | opensc | 0.18.0-150000.3.23.1 | SUSE-SU-2022:1041-1 |
| SLES 12 SP5 | opensc | 0.13.0-3.11.1 | SUSE-SU-2021:0998-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 | opensc | 0.18.0-150000.3.23.1 | SUSE-SU-2022:1041-1 |
| SLES for SAP 12 SP5 | opensc | 0.13.0-3.11.1 | SUSE-SU-2021:0998-1 |
| SLE HPC 15 | opensc | 0.18.0-150000.3.23.1 | SUSE-SU-2022:1041-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | opensc | 0.21.0-2.2 | openSUSE-SU-2024:11123-1 |
| openSUSE Leap 15.2 | opensc | 0.19.0-lp152.3.3.1 | openSUSE-SU-2021:0565-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | opensc | 0.20.0-r0 | — |
| Alpine v3.23 | opensc | 0.20.0-r0 | — |
| Alpine v3.22 | opensc | 0.20.0-r0 | — |
| Alpine v3.21 | opensc | 0.20.0-r0 | — |
| Alpine v3.20 | opensc | 0.20.0-r0 | — |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | opensc | 0.20.0-r0 | — |
| Alpine v3.18 | opensc | 0.20.0-r0 | — |
| Alpine v3.17 | opensc | 0.20.0-r0 | — |
| Alpine v3.16 | opensc | 0.20.0-r0 | — |
| Alpine v3.15 | opensc | 0.20.0-r0 | — |
| Alpine v3.14 | opensc | 0.20.0-r0 | — |
| Alpine v3.13 | opensc | 0.20.0-r0 | — |
| Alpine v3.12 | opensc | 0.20.0-r0 | — |
| Alpine v3.11 | opensc | 0.20.0-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | opensc | 0.19.0-5.amzn2.0.1 | ALAS2-2023-2262 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | opensc | 0.20.0-2.el8 | ELSA-2020-4483 |
Advisories 12
- USN-5281-1 opensc vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- DLA-1916-1 opensc - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2832-1 opensc - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:11123-1 opensc-0.21.0-2.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:0998-1 Security update for opensc SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:1168-1 Security update for opensc SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:0565-1 Security update for opensc SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:1041-1 Security update for opensc SUSE / openSUSE Security Updates · Feb 4, 2026
- RHSA-2020:4483 Red Hat Security Advisory: opensc security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- WID-SEC-2023-2408 OpenSC: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff BSI CERT-Bund (WID) · Sep 20, 2023
- ALAS2-2023-2262 Moderate: opensc security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Sep 20, 2023
- ELSA-2020-4483 Moderate: opensc security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 10, 2020
References
- https://github.com/OpenSC/OpenSC/compare/f1691fc...12218d4
- https://github.com/OpenSC/OpenSC/commit/a3fc7693f3a035a8a7921cffb98432944bb42740
- [debian-lts-announce] 20190911 [SECURITY] [DLA 1916-1] opensc security update mailing-list
- [oss-security] 20191229 OpenSC 0.20.0 released mailing-list
- FEDORA-2020-3c93790abe vendor-advisory
- [debian-lts-announce] 20211129 [SECURITY] [DLA 2832-1] opensc security update mailing-list