opensc: Improper handling of buffer limits for CAC certificates
Published Dec 1, 2019
4.6
MEDIUMCVSS 3.1
EPSS 0.25%
Description
An issue was discovered in OpenSC through 0.19.0 and 0.20.x through 0.20.0-rc3. libopensc/card-cac1.c mishandles buffer limits for CAC certificates.
Affected products
No data.
- 0.19.0
- 0.20.0
- 0.20.0
- 0.20.0
No data.
Red Hat Enterprise Linux 8
opensc-0:0.20.0-2.el8
Fixed · RHSA-2020:4483
Red Hat Enterprise Linux 7
opensc
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 8 | opensc-0:0.20.0-2.el8 | Fixed | RHSA-2020:4483 |
| Red Hat Enterprise Linux 7 | opensc | Will not fix | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
AV:L/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.25% (0.00246) | 14.35th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.25% (0.00246) | 16.21th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.19% (0.00190) | 56.88th | v3 (v2023.03.01) |
| Oct 5, 2023 | 0.19% (0.00190) | 56.20th | v3 (v2023.03.01) |
| Sep 20, 2023 | 0.14% (0.00138) | 48.81th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.11% (0.00115) | 43.60th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.79% (0.01787) | 54.18th | v2 (v2022.01.01) |
| Feb 3, 2022 | 4.50% (0.04504) | 76.47th | v1 |
| Jan 6, 2022 | 4.50% (0.04504) | 76.26th | v1 |
| Jan 5, 2022 | 1.04% (0.01040) | 65.70th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.04% (0.01040) | 0.00th | v1 |
References (8)
- http://www.openwall.com/lists/oss-security/2019/12/29/1 mailing-listx_refsource_MLISTMailing List
- https://access.redhat.com/security/cve/CVE-2019-19481 Vendor Advisory
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=18618 x_refsource_MISCPermissions RequiredThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1782955 Issue Tracking
- https://github.com/OpenSC/OpenSC/commit/b75c002cfb1fd61cd20ec938ff4937d7b1a94278 x_refsource_MISCPatch
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NDSQLMZZYBHO5X3BK7D6E7E6NZIMZDI5/ vendor-advisoryx_refsource_FEDORA
- https://nvd.nist.gov/vuln/detail/CVE-2019-19481
- https://www.cve.org/CVERecord?id=CVE-2019-19481
| Link | Providers | Tags |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2019/12/29/1 | mailing-listx_refsource_MLISTMailing List | |
| https://access.redhat.com/security/cve/CVE-2019-19481 | Vendor Advisory | |
| https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=18618 | x_refsource_MISCPermissions RequiredThird Party Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1782955 | Issue Tracking | |
| https://github.com/OpenSC/OpenSC/commit/b75c002cfb1fd61cd20ec938ff4937d7b1a94278 | x_refsource_MISCPatch | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NDSQLMZZYBHO5X3BK7D6E7E6NZIMZDI5/ | vendor-advisoryx_refsource_FEDORA | |
| https://nvd.nist.gov/vuln/detail/CVE-2019-19481 | ||
| https://www.cve.org/CVERecord?id=CVE-2019-19481 |
Change history (0)
No recorded changes yet.