# CVE-2020-26570: opensc: The OpenSC set of libraries and utilities provides support for working with smart cards

CVE-2020-26570 is fixed in 2 products on 1 platform, first by opensc 0.17.0-3ubuntu0.1~esm1, released October 5, 2020. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2020-26570
- Priority: Routine
- CVSS: 6.4 (Moderate)
- EPSS: 0.0037
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 5, 2020

## Description

The OpenSC set of libraries and utilities provides support for working with smart cards. OpenSC focuses on cards that support cryptographic operations and enables their use for authentication, mail encryption, or digital signatures.  Security Fix(es):  * opensc: heap-based buffer overflow in sc_oberthur_read_file (CVE-2020-26570)  * opensc: stack-based buffer overflow in sc_pkcs15emu_gemsafeGPK_init (CVE-2020-26571)  * opensc: stack-based buffer overflow in tcos_decipher (CVE-2020-26572)  For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.  Additional Changes:  For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.4 Release Notes linked from the References section.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | opensc RHEL 8 | 0:0.20.0-4.el8 | [RHSA-2021:1600](https://patchblox.com/security/data/fix/linux/rhsa-2021-1600.md) | May 18, 2021 |
| Linux | opensc Ubuntu 18.04.6 LTS (bionic) | 0.17.0-3ubuntu0.1~esm1 | [opensc 0.17.0-3ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-opensc-0.17.0-3ubuntu0.1-esm1.md) | Oct 5, 2020 |
| Linux | opensc Ubuntu 20.04 LTS (focal) | 0.20.0-3ubuntu0.1~esm1 | [opensc 0.20.0-3ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-opensc-0.20.0-3ubuntu0.1-esm1.md) | Oct 5, 2020 |
| Linux | opensc ol 8 | 0:0.20.0-4.el8 | [ELSA-2021-1600](https://patchblox.com/security/data/fix/linux/elsa-2021-1600.md) | May 25, 2021 |
| Linux | opensc-pkcs11 Ubuntu 18.04.6 LTS (bionic) | 0.17.0-3ubuntu0.1~esm1 | [opensc-pkcs11 0.17.0-3ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-opensc-pkcs11-0.17.0-3ubuntu0.1-esm1.md) | Oct 5, 2020 |
| Linux | opensc-pkcs11 Ubuntu 20.04 LTS (focal) | 0.20.0-3ubuntu0.1~esm1 | [opensc-pkcs11 0.20.0-3ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-opensc-pkcs11-0.20.0-3ubuntu0.1-esm1.md) | Oct 5, 2020 |

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