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OpenAdvisories
High USN-4478-1 1 CVE

python-rsa vulnerability

Published Aug 31, 2020 · Updated Feb 10, 2026

Ecosystem: Ubuntu

Summary

It was discovered that Python-RSA incorrectly handled certain ciphertexts.
An attacker could possibly use this issue to obtain sensitive information.

Fixed packages 1

ReleasePackageFixed in
Ubuntu · Pro 14.04 LTS Pro:14.04:LTS python-rsa 3.1.2-1ubuntu0.1+esm1

Vulnerabilities 1

  • High 7.5
    CVE-2020-13757

    Python-RSA decryption of ciphertext leads to DoS

    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 affect…

    rsa python-rsa python-rsa Debian Ubuntu PyPI

References

  • report
    https://ubuntu.com/security/CVE-2020-13757