CVE-2019-11356 · cross-distro fix matrix

CVE-2019-11356: The CalDAV feature in httpd in Cyrus IMAP 2.5.x through 2.5.12 and 3.0.x through 3.0.9 allows remote attackers to execute arbitrary code via a crafted HTTP PUT operation for an event with a long iCalendar property name.

Affects 3 Linux releases across 3 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2019-11356 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

cyrus-imapd→ fixed in3.0.8-6urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y cyrus-imapd
```

Debian bookworm

Source: Debian Security Tracker

cyrus-imapd→ fixed in3.0.8-6urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y cyrus-imapd
```

Debian trixie

Source: Debian Security Tracker

cyrus-imapd→ fixed in3.0.8-6urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y cyrus-imapd
```

Are YOU affected by CVE-2019-11356?

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.

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