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CVE-2020-25658

python-rsa: bleichenbacher timing oracle attack against RSA decryption

It was found that python-rsa is vulnerable to Bleichenbacher timing attacks. An attacker can use this flaw via the RSA decryption API to decrypt parts of the cipher text encrypted with RSA.

CVSS 3.1 · 7.5 High EPSS 1.7% KEV · Not listed
Vendors
Fedoraproject Python-rsa Project Redhat
Products
Fedora Python-rsa Ceph Storage and 2 more
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 affects application behavior (such as by causing excessive memory allocation).

CVSS 3.1 · 7.5 High EPSS 1.4% KEV · Not listed
Vendors
Canonical Fedoraproject Python-rsa Project and 1 more
Products
Ubuntu Linux Fedora Python-rsa and 1 more