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CVE-2020-7247 · cross-distro fix matrix

CVE-2020-7247: smtp_mailaddr in smtp_session.c in OpenSMTPD 6.6, as used in OpenBSD 6.6 and other products, allows remote attackers to execute arbitrary commands as root via a crafted SMTP session, as demonstrated by shell metacharacters in a MAIL FROM field. This affects the "uncommented" default configuration. T

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

Fix per ecosystem

Each block below is a distro release where CVE-2020-7247 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

  • opensmtpd→ fixed in6.6.2p1-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y opensmtpd

Debian bookworm

Source: Debian Security Tracker

  • opensmtpd→ fixed in6.6.2p1-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y opensmtpd

Debian trixie

Source: Debian Security Tracker

  • opensmtpd→ fixed in6.6.2p1-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y opensmtpd

Alpine v3.20

Source: Alpine secdb

  • opensmtpd→ fixed in6.6.2p1-r0
    apk update && apk add --upgrade opensmtpd

Alpine v3.21

Source: Alpine secdb

  • opensmtpd→ fixed in6.6.2p1-r0
    apk update && apk add --upgrade opensmtpd

Alpine edge

Source: Alpine secdb

  • opensmtpd→ fixed in6.6.2p1-r0
    apk update && apk add --upgrade opensmtpd

Alpine v3.18

Source: Alpine secdb

  • opensmtpd→ fixed in6.6.2p1-r0
    apk update && apk add --upgrade opensmtpd

Alpine v3.19

Source: Alpine secdb

  • opensmtpd→ fixed in6.6.2p1-r0
    apk update && apk add --upgrade opensmtpd
Are YOU affected by CVE-2020-7247?

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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