CVE-2023-50782

Publication date 5 February 2024

Last updated 26 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

A flaw was found in the python-cryptography package. This issue may allow a remote attacker to decrypt captured messages in TLS servers that use RSA key exchanges, which may lead to exposure of confidential or sensitive data.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
python-cryptography	24.04 LTS noble	Not affected
	23.10 mantic	Fixed 38.0.4-4ubuntu0.23.10.2
	23.04 lunar	Ignored end of life, was deferred [2024-02-19]
	22.04 LTS jammy	Fixed 3.4.8-1ubuntu2.2
	20.04 LTS focal	Fixed 2.8-3ubuntu0.3
	18.04 LTS bionic	Fixed 2.1.4-1ubuntu1.4+esm1
	16.04 LTS xenial	Fixed 1.2.3-1ubuntu0.3+esm1
	14.04 LTS trusty	Ignored end of standard support

Get expanded security coverage with Ubuntu Pro

Reduce your average CVE exposure time from 98 days to 1 day with expanded CVE patching, ten-years security maintenance and optional support for the full stack of open-source applications. Free for personal use.

Get Ubuntu Pro 30-day free trial

Notes

litios

The issue is in OpenSSL, fixed in 3.2.0. Once OpenSSL fix is backported, a no-change rebuild of cryptography would be needed to fix the vulnerability.

Severity score breakdown

Parameter	Value
Base score	7.5 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	None
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N