# CVE-2023-2977: opensc: A vulnerbility was found in OpenSC

CVE-2023-2977 is fixed in 4 products on 1 platform, first by DEBIAN-CVE-2023-2977, released June 1, 2023. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2023-2977
- Priority: High
- CVSS: 7.1 (high)
- EPSS: 0.0029
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 31, 2023

## Description

A vulnerbility was found in OpenSC. This security flaw cause a buffer overrun vulnerability in pkcs15 cardos_have_verifyrc_package. The attacker can supply a smart card package with malformed ASN1 context. The cardos_have_verifyrc_package function scans the ASN1 buffer for 2 tags, where remaining length is wrongly caculated due to moved starting pointer. This leads to possible heap-based buffer oob read. In cases where ASAN is enabled while compiling this causes a crash. Further info leak or more damage is possible.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | opensc Debian 12.15 (bookworm) | 0.23.0-0.3 | [DEBIAN-CVE-2023-2977](https://patchblox.com/security/data/fix/linux/debian-cve-2023-2977.md) | Jun 1, 2023 |
| Linux | opensc Debian 13.5 (trixie) | 0.23.0-0.3 | [DEBIAN-CVE-2023-2977](https://patchblox.com/security/data/fix/linux/debian-cve-2023-2977.md) | Jun 1, 2023 |
| Linux | opensc Debian 14 | 0.23.0-0.3 | [DEBIAN-CVE-2023-2977](https://patchblox.com/security/data/fix/linux/debian-cve-2023-2977.md) | Jun 1, 2023 |
| Linux | opensc RHEL 8 | 0:0.20.0-6.el8 | [RHSA-2023:7160](https://patchblox.com/security/data/fix/linux/rhsa-2023-7160.md) | Nov 14, 2023 |
| Linux | opensc RHEL 9 | 0:0.23.0-2.el9 | [RHSA-2023:6587](https://patchblox.com/security/data/fix/linux/rhsa-2023-6587.md) | Nov 7, 2023 |
| Linux | opensc Ubuntu 18.04.6 LTS (bionic) | 0.17.0-3ubuntu0.1~esm2 | [opensc 0.17.0-3ubuntu0.1~esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-opensc-0.17.0-3ubuntu0.1-esm2.md) | Sep 3, 2024 |
| Linux | opensc Ubuntu 20.04 LTS (focal) | 0.20.0-3ubuntu0.1~esm4 | [opensc 0.20.0-3ubuntu0.1~esm4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-opensc-0.20.0-3ubuntu0.1-esm4.md) | Sep 10, 2024 |
| Linux | opensc Ubuntu 22.04.1 LTS (jammy) | 0.22.0-1ubuntu2+esm1 | [opensc 0.22.0-1ubuntu2+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-opensc-0.22.0-1ubuntu2-esm1.md) | Sep 10, 2024 |
| Linux | opensc almalinux 8 | 0.20.0-6.el8 | [ALSA-2023:7160](https://patchblox.com/security/data/fix/linux/alsa-2023-7160.md) | Nov 14, 2023 |
| Linux | opensc almalinux 9 | 0.23.0-2.el9 | [ALSA-2023:6587](https://patchblox.com/security/data/fix/linux/alsa-2023-6587.md) | Nov 7, 2023 |
| Linux | opensc amzn 2023 | 0.23.0-3.amzn2023.0.1 | [ALAS2023-2023-207](https://patchblox.com/security/data/fix/linux/alas2023-2023-207.md) | Jun 7, 2023 |
| Linux | opensc ol 8 | 0:0.20.0-6.el8 | [ELSA-2023-7160](https://patchblox.com/security/data/fix/linux/elsa-2023-7160.md) | Nov 17, 2023 |
| Linux | opensc ol 9 | 0:0.23.0-2.el9 | [ELSA-2023-6587](https://patchblox.com/security/data/fix/linux/elsa-2023-6587.md) | Nov 11, 2023 |
| Linux | opensc-debuginfo amzn 2023 | 0.23.0-3.amzn2023.0.1 | [ALAS2023-2023-207](https://patchblox.com/security/data/fix/linux/alas2023-2023-207.md) | Jun 7, 2023 |
| Linux | opensc-debugsource amzn 2023 | 0.23.0-3.amzn2023.0.1 | [ALAS2023-2023-207](https://patchblox.com/security/data/fix/linux/alas2023-2023-207.md) | Jun 7, 2023 |
| Linux | opensc-pkcs11 Ubuntu 18.04.6 LTS (bionic) | 0.17.0-3ubuntu0.1~esm2 | [opensc-pkcs11 0.17.0-3ubuntu0.1~esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-opensc-pkcs11-0.17.0-3ubuntu0.1-esm2.md) | Sep 3, 2024 |
| Linux | opensc-pkcs11 Ubuntu 20.04 LTS (focal) | 0.20.0-3ubuntu0.1~esm4 | [opensc-pkcs11 0.20.0-3ubuntu0.1~esm4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-opensc-pkcs11-0.20.0-3ubuntu0.1-esm4.md) | Sep 10, 2024 |
| Linux | opensc-pkcs11 Ubuntu 22.04.1 LTS (jammy) | 0.22.0-1ubuntu2+esm1 | [opensc-pkcs11 0.22.0-1ubuntu2+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-opensc-pkcs11-0.22.0-1ubuntu2-esm1.md) | Sep 10, 2024 |

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