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Externally Controlled Reference to a Resource in Another Sphere in ruby-mysql

Moderate severity GitHub Reviewed Published Jun 29, 2022 to the GitHub Advisory Database • Updated Jan 27, 2023

Package

bundler ruby-mysql (RubyGems)

Affected versions

< 2.10.0

Patched versions

2.10.0

Description

A malicious actor can read arbitrary files from a client that uses ruby-mysql to communicate to a rogue MySQL server and issue database queries. In these cases, the server has the option to create a database reply using the LOAD DATA LOCAL statement, which instructs the client to provide additional data from a local file readable by the client (and not a "local" file on the server).

References

Published by the National Vulnerability Database Jun 28, 2022
Published to the GitHub Advisory Database Jun 29, 2022
Reviewed Jul 5, 2022
Last updated Jan 27, 2023

Severity

Moderate
6.5
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Weaknesses

CVE ID

CVE-2021-3779

GHSA ID

GHSA-73pr-g6jj-5hc9

Source code

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