CVE-2021-32066 · cross-distro fix matrix

CVE-2021-32066: An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. Net::IMAP does not raise an exception when StartTLS fails with an an unknown response, which might allow man-in-the-middle attackers to bypass the TLS protections by leveraging a network position between the c

Affects 8 Linux releases across 8 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2021-32066 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

ruby2.7→ fixed in2.7.4-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y ruby2.7
```

Debian bookworm

Source: Debian Security Tracker

jruby→ fixed in9.3.9.0+ds-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y jruby
```

Debian trixie

Source: Debian Security Tracker

jruby→ fixed in9.3.9.0+ds-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y jruby
```

Alpine v3.20

Source: Alpine secdb

ruby→ fixed in2.7.4-r0
```
apk update && apk add --upgrade ruby
```

Alpine v3.21

Source: Alpine secdb

ruby→ fixed in2.7.4-r0
```
apk update && apk add --upgrade ruby
```

Alpine edge

Source: Alpine secdb

ruby→ fixed in2.7.4-r0
```
apk update && apk add --upgrade ruby
```

Alpine v3.18

Source: Alpine secdb

ruby→ fixed in2.7.4-r0
```
apk update && apk add --upgrade ruby
```

Alpine v3.19

Source: Alpine secdb

ruby→ fixed in2.7.4-r0
```
apk update && apk add --upgrade ruby
```

Are YOU affected by CVE-2021-32066?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

curl https://mindsparkstack.com/scan.sh | bash

Form-based quickscan View on NVD

Continuous monitoring beats manual checking

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