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sybrenstuvel/python-rsa · Security

Timing attacks in python-rsa

GHSA ID
GHSA-xrx6-fmxq-rjj2
CVE ID
CVE-2020-25658
Severity
high
Published
Updated
CVSS
5.9 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v3
5.9 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4
8.2 · CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Description

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

CWEs

  • CWE-327 · Use of a Broken or Risky Cryptographic Algorithm
  • CWE-385 · Covert Timing Channel

References