cryptography up to 41.0.6 on Python RSA Key Exchange timing discrepancy

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability was found in cryptography on Python and classified as problematic. This issue affects some unknown processing of the component RSA Key Exchange Handler. Such manipulation leads to timing discrepancy. This vulnerability is uniquely identified as CVE-2023-50782. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in cryptography on Python. It has been rated as problematic. Affected by this issue is an unknown code of the component RSA Key Exchange Handler. The manipulation with an unknown input leads to a timing discrepancy vulnerability. Using CWE to declare the problem leads to CWE-208. Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not. Impacted is confidentiality. CVE summarizes:

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.

The weakness was disclosed 02/06/2024. The advisory is shared for download at access.redhat.com. This vulnerability is handled as CVE-2023-50782 since 12/13/2023. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1592.

The vulnerability scanner Nessus provides a plugin with the ID 209835 (SUSE SLES12 Security Update : openssl-1_1 (SUSE-SU-2024:3757-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 42.0.0 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (209835) and EUVD (EUVD-2024-0496). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 6.2

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 7.5
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Timing discrepancy
CWE: CWE-208 / CWE-203 / CWE-200
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 209835
Nessus Name: SUSE SLES12 Security Update : openssl-1_1 (SUSE-SU-2024:3757-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: cryptography 42.0.0

Timelineinfo

12/13/2023 🔍
02/05/2024 +54 days 🔍
02/06/2024 +0 days 🔍
08/03/2025 +544 days 🔍

Sourcesinfo

Advisory: access.redhat.com
Status: Confirmed

CVE: CVE-2023-50782 (🔍)
GCVE (CVE): GCVE-0-2023-50782
GCVE (VulDB): GCVE-100-252872
EUVD: 🔍

Entryinfo

Created: 02/06/2024 00:49
Updated: 08/03/2025 14:41
Changes: 02/06/2024 00:49 (48), 07/27/2024 00:21 (29), 10/27/2024 20:46 (3), 08/03/2025 14:41 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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