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A flaw was found in all python-ecdsa versions before 0.13.3, where it did not correctly verify whether signatures used DER encoding. Without this verification, a malformed signature could be accepted, making the signature malleable. Without proper verification, an attacker could use a malleable signature to create false transactions.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade py3-ecdsa | Aug 22, 2024 | Jan 2, 2020 |
| Amazon_linux | — | Upgrade python-ecdsa | Aug 9, 2023 | Nov 4, 2019 |
| Debian | — | Upgrade python-ecdsa | Nov 1, 2019 | Nov 1, 2019 |
| Freebsd | — | Upgrade py27-ecdsaUpgrade py37-ecdsa | Aug 17, 2020 | Aug 16, 2020 |
| Huawei Euleros 2_0_sp2 | — | Upgrade python-ecdsa | Sep 16, 2021 | Jan 2, 2020 |
| Huawei Euleros 2_0_sp3 | — | Upgrade python-ecdsa | Sep 28, 2020 | Jan 2, 2020 |
| Huawei Euleros 2_0_sp5 | — | Upgrade python-ecdsa | Sep 3, 2020 | Jan 2, 2020 |
| Huawei Euleros 2_0_sp8 | — | Upgrade python2-ecdsaUpgrade python3-ecdsa | Jul 31, 2020 | Jan 2, 2020 |
| Suse | — | Upgrade python3-ecdsaUpgrade python2-ecdsaUpgrade python-ecdsa | Nov 12, 2019 | Nov 4, 2019 |
| Ubuntu | — | Upgrade python-ecdsaUpgrade python3-ecdsa | Nov 19, 2019 | Nov 4, 2019 |
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