Summary
Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2026-42258: Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to versions 0.4.24, 0.5.14, and 0.6.4, symbol arguments to commands are vulnerable to a CRLF Injection / IMAP Command injection via Symbol arguments passed to IMAP commands. This issue has been patched in versions 0.4.24, 0.5.14, and 0.6.4. CVE-2026-42246: Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to versions 0.3.10, 0.4.24, 0.5.14, and 0.6.4, a man-in-the-middle attacker can cause Net::IMAP#starttls to return "successfully", without starting TLS. This issue has been patched in versions 0.3.10, 0.4.24, 0.5.14, and 0.6.4.
Fixed packages 34
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2023 | ruby4.0 | 0:4.0.1-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-bundled-gems | 0:4.0.1-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-bundled-gems-debuginfo | 0:4.0.1-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-debuginfo | 0:4.0.1-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-debugsource | 0:4.0.1-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-default-gems | 0:4.0.1-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-devel | 0:4.0.1-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-doc | 0:4.0.1-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-libs | 0:4.0.1-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-libs-debuginfo | 0:4.0.1-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-rubygem-bigdecimal | 0:4.0.1-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-rubygem-bigdecimal-debuginfo | 0:4.0.1-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-rubygem-bundler | 0:4.0.3-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-rubygem-io-console | 0:0.8.2-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-rubygem-io-console-debuginfo | 0:0.8.2-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-rubygem-irb | 0:1.16.0-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-rubygem-json | 0:2.18.0-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-rubygem-json-debuginfo | 0:2.18.0-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-rubygem-minitest | 0:6.0.0-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-rubygem-power_assert | 0:3.0.1-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-rubygem-psych | 0:5.3.1-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-rubygem-psych-debuginfo | 0:5.3.1-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-rubygem-racc | 0:1.8.1-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-rubygem-racc-debuginfo | 0:1.8.1-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-rubygem-rake | 0:13.3.1-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-rubygem-rbs | 0:3.10.0-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-rubygem-rbs-debuginfo | 0:3.10.0-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-rubygem-rdoc | 0:7.0.3-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-rubygem-rexml | 0:3.4.4-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-rubygem-rss | 0:0.3.2-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-rubygem-test-unit | 0:3.7.5-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-rubygem-typeprof | 0:0.31.1-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-rubygems | 0:4.0.3-32.amzn2023.0.2 |
| Amazon Linux · 2023 | ruby4.0-rubygems-devel | 0:4.0.3-32.amzn2023.0.2 |
Vulnerabilities 2
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High 7.6
net-imap vulnerable to STARTTLS stripping via invalid response timing
Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to versions 0.3.10, 0.4.24, 0.5.14, and 0.6.4, a man-in-the-middle attacker can cause Net::IMAP#starttls to return "successfully", without starting TLS. This issu…
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Medium 5.8
net-imap: Command Injection via unvalidated Symbol inputs
Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to versions 0.4.24, 0.5.14, and 0.6.4, symbol arguments to commands are vulnerable to a CRLF Injection / IMAP Command injection via Symbol arguments passed to IMA…