| Package | Affected versions | Patched versions |
|---|---|---|
| ecdsa | < 0.13.3 | 0.13.3 |
| python-ecdsa | < 0.13.3 | 0.13.3 |
| ceph storage | = 2.0= 3.0 | |
| openstack | = 10= 13= 14= 15 | |
| virtualization | = 4.0 |
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.
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