CVEs-PoC/2020/CVE-2020-13757.md

CVE-2020-13757

Description

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).

POC

Reference

• https://github.com/sybrenstuvel/python-rsa/issues/146
• https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667

Github

• https://github.com/ARPSyndicate/cvemon
• https://github.com/AdiRashkes/python-tda-bug-hunt-0