# CVE-2020-25659: python3-cryptography: The python-cryptography packages contain a Python Cryptographic Authority's (PyCA's) cryptography library, which prov...

CVE-2020-25659 is fixed in 2 products on 1 platform, first by python-cryptography 2.1.4-1ubuntu1.4, released October 27, 2020. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2020-25659
- Priority: Routine
- CVSS: 5.9 (Moderate)
- EPSS: 0.0246
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 27, 2020

## Description

The python-cryptography packages contain a Python Cryptographic Authority's (PyCA's) cryptography library, which provides cryptographic primitives and recipes to Python developers.  The following packages have been upgraded to a later upstream version: python-cryptography (3.2.1). (BZ#1873581, BZ#1891947)  Security Fix(es):  * python-cryptography: bleichenbacher timing oracle attack against RSA decryption (CVE-2020-25659)  * python-cryptography: certain sequences of update() calls when symmetrically encrypting very large payloads could result in an integer overflow and lead to buffer overflows (CVE-2020-36242)  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 | python-cryptography Ubuntu 18.04.6 LTS (bionic) | 2.1.4-1ubuntu1.4 | [python-cryptography 2.1.4-1ubuntu1.4](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python-cryptography-2.1.4-1ubuntu1.4.md) | Oct 27, 2020 |
| Linux | python-cryptography Ubuntu 20.04 LTS (focal) | 2.8-3ubuntu0.1 | [python-cryptography 2.8-3ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-python-cryptography-2.8-3ubuntu0.1.md) | Oct 27, 2020 |
| Linux | python3-cryptography RHEL 8 | 0:3.2.1-4.el8 | [RHSA-2021:1608](https://patchblox.com/security/data/fix/linux/rhsa-2021-1608.md) | May 18, 2021 |
| Linux | python3-cryptography Ubuntu 18.04.6 LTS (bionic) | 2.1.4-1ubuntu1.4 | [python3-cryptography 2.1.4-1ubuntu1.4](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python3-cryptography-2.1.4-1ubuntu1.4.md) | Oct 27, 2020 |
| Linux | python3-cryptography Ubuntu 20.04 LTS (focal) | 2.8-3ubuntu0.1 | [python3-cryptography 2.8-3ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-python3-cryptography-2.8-3ubuntu0.1.md) | Oct 27, 2020 |
| Linux | python3-cryptography ol 8 | 0:3.2.1-4.el8 | [ELSA-2021-1608](https://patchblox.com/security/data/fix/linux/elsa-2021-1608.md) | May 25, 2021 |

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