VDB-317870 · CVE-2022-50237 · RUSTSEC-2022-0093

dalek-cryptography ed25519-dalek Crate up to 1 on Rust exposure of sensitive system information to an unauthorized control sphere

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.1	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic was found in dalek-cryptography ed25519-dalek Crate up to 1 on Rust. This vulnerability affects unknown code. Such manipulation leads to exposure of sensitive system information to an unauthorized control sphere. This vulnerability is referenced as CVE-2022-50237. The attack can only be performed from a local environment. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in dalek-cryptography ed25519-dalek Crate up to 1 on Rust. It has been rated as problematic. Affected by this issue is an unknown function. The manipulation with an unknown input leads to a exposure of sensitive system information to an unauthorized control sphere vulnerability. Using CWE to declare the problem leads to CWE-497. The product does not properly prevent sensitive system-level information from being accessed by unauthorized actors who do not have the same level of access to the underlying system as the product does. Impacted is confidentiality. CVE summarizes:

The ed25519-dalek crate before 2 for Rust allows a double public key signing function oracle attack. The Keypair implementation leads to a simple computation for extracting a private key.

The advisory is available at rustsec.org. This vulnerability is handled as CVE-2022-50237 since 07/28/2025. The exploitation is known to be difficult. Local access is required to approach this attack. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

Upgrading to version 2 eliminates this vulnerability.

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Productinfo

Type

Rust Package

Vendor

dalek-cryptography

Name

ed25519-dalek Crate

Version

CPE 2.3info

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CPE 2.2info

🔒

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.2
VulDB Meta Temp Score: 4.1

VulDB Base Score: 2.5
VulDB Temp Score: 2.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.9
CNA Vector (MITRE): 🔒

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Exposure of sensitive system information to an unauthorized control sphere
CWE: CWE-497
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: ed25519-dalek Crate 2

Timelineinfo

07/28/2025 Advisory disclosed
07/28/2025 +0 days CVE reserved
07/28/2025 +0 days VulDB entry created
07/28/2025 +0 days VulDB entry last update

Sourcesinfo

Advisory: RUSTSEC-2022-0093
Status: Confirmed

CVE: CVE-2022-50237 (🔒)
GCVE (CVE): GCVE-0-2022-50237
GCVE (VulDB): GCVE-100-317870

Entryinfo

Created: 07/28/2025 07:23
Changes: 07/28/2025 07:23 (65)
Complete: 🔍
Cache ID: 216:3F0:103