#VU50367 Covert Timing Channel in python-cryptography - CVE-2020-25659

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU50367

#VU50367 Covert Timing Channel in python-cryptography - CVE-2020-25659

Published: January 11, 2021 / Updated: February 4, 2021


Vulnerability identifier: #VU50367
Vulnerability risk: Medium
CVSSv4.0: 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/E:U/U:Green
CVE-ID: CVE-2020-25659
CWE-ID: CWE-385
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
python-cryptography
Software vendor:
Python Cryptographic Authority

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

python-cryptography 3.2 is vulnerable to Bleichenbacher timing attacks in the RSA decryption API, via timed processing of valid PKCS#1 v1.5 ciphertext.


Remediation

Install update from vendor's website.

External links