python3-rsa: Python-RSA before 4.1 ignores leading '\0' bytes during decryption of ciphertext
CVE-2020-13757 is fixed in 2 products on 1 platform, first by python-rsa 3.4.2-1ubuntu0.1~esm1, released June 1, 2020. It is not reported as exploited. Patch Radar priority: Routine.
Python-RSA before 4.1 ignores leading '\0' bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| python-rsa · Ubuntu 18.04.6 LTS (bionic) | 3.4.2-1ubuntu0.1~esm1 | python-rsa 3.4.2-1ubuntu0.1~esm1 | Jun 1, 2020 |
| python3-rsa · Ubuntu 18.04.6 LTS (bionic) | 3.4.2-1ubuntu0.1~esm1 | python3-rsa 3.4.2-1ubuntu0.1~esm1 | Jun 1, 2020 |
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