PT-2019-1025 · Ruby+4 · Rubygems+4

Published 2019-03-27 · Updated 2020-11-27 · CVE-2019-8321

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Name of the Vulnerable Software and Affected Versions: RubyGems versions 2.6 through 3.0.2

Description: The issue is related to insufficient escaping in the Gem::UserInteraction module of the RubyGems package management system. This allows a remote attacker to inject escape sequences, potentially compromising data integrity. The say function is called without proper escaping by Gem::UserInteraction#verbose, making escape sequence injection possible.

Recommendations: For versions 2.6 through 3.0.2, consider disabling the Gem::UserInteraction#verbose function until a patch is available to prevent escape sequence injection. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Argument Injection

Weakness Enumeration

CWE-88

Related Identifiers

ALBA-2019:3384

BDU:2020-00752

CESA-2019_1235

CVE-2019-8321

DLA-1796-1

DLA-2330-1

DSA-4433-1

GHSA-FR32-GR5C-XQ5C

MGASA-2020-0243

MGASA-2020-0440

OPENSUSE-SU-2019:1771-1

OPENSUSE-SU-2019_1771-1

RHSA-2019:1148

RHSA-2019:1150

RHSA-2019:1235

RHSA-2019:1429

RHSA-2019_1235

RHSA-2020:2769

SUSE-SU-2019:1804-1

SUSE-SU-2020:1570-1

SUSE-SU-2020_1570-1

USN-3945-1

Affected Products

Centos

Red Hat

Rubygems

Suse

Ubuntu

References · 144

• 🔥 https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rubygems-update/CVE-2019-8322.yml · Exploit
• 🔥 https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rubygems-update/CVE-2019-8321.yml · Exploit
• 🔥 https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rubygems-update/CVE-2019-8323.yml · Exploit
• 🔥 https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rubygems-update/CVE-2019-8325.yml · Exploit
• 🔥 https://github.com/rails-lts/json_cve_2020_10663 · Exploit
• https://errata.almalinux.org/8/ALBA-2019-3384.html · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-8321 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4433-1 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2020-0243.html · Security Note
• https://osv.dev/vulnerability/CVE-2019-8321 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-8320 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2020-0440 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-8321 · Security Note
• https://ubuntu.com/security/notices/USN-3945-1 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-fr32-gr5c-xq5c · Vendor Advisory