PT-2022-5001 · Unknown · Ruby-Mysql

Hans-Martin Münch · Published 2022-06-28 · Updated 2022-07-07 · CVE-2021-3779

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:C/I:N/A:N

Name of the Vulnerable Software and Affected Versions ruby-mysql versions prior to 2.10.0

Description The issue allows a malicious MySQL server to request local file content from a client using ruby-mysql without explicit authorization from the user. 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. The server can 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.

Recommendations For versions prior to 2.10.0, update to version 2.10.0 or later to resolve the issue. As a temporary workaround, consider restricting access to the LOAD DATA LOCAL statement until a patch is available. Avoid using the LOAD DATA LOCAL statement in the affected API endpoint until the issue is resolved.

Exploit

Fix

Weakness Enumeration

CWE-610

Related Identifiers

BDU:2022-06214

CVE-2021-3779

GHSA-73PR-G6JJ-5HC9

Affected Products

Ruby-Mysql

References · 11

• 🔥 https://github.com/rubysec/ruby-advisory-db/blob/master/gems/ruby-mysql/CVE-2021-3779.yml · Exploit
• 🔥 https://rapid7.com/blog/post/2022/06/28/cve-2021-3779-ruby-mysql-gem-client-file-read-fixed · Exploit
• https://cve.org/CVERecord?id=CVE-2021-3779 · Security Note
• https://osv.dev/vulnerability/GHSA-73pr-g6jj-5hc9 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-3779 · Security Note
• https://osv.dev/vulnerability/CVE-2021-3779 · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-06214 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-3779 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-3779 · Vendor Advisory
• https://rubygems.org/gems/ruby-mysql/versions/2.10.0 · Note
• http://github.com/tmtm/ruby-mysql · Note