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CVE-2021-31800 · cross-distro fix matrix

CVE-2021-31800: Multiple path traversal vulnerabilities exist in smbserver.py in Impacket through 0.9.22. An attacker that connects to a running smbserver instance can list and write to arbitrary files via ../ directory traversal. This could potentially be abused to achieve arbitrary code execution by replacing /et

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

Fix per ecosystem

Each block below is a distro release where CVE-2021-31800 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

  • impacket→ fixed in0.9.22-2urgency: not yet assigned
    sudo apt-get install --only-upgrade -y impacket

Debian bookworm

Source: Debian Security Tracker

  • impacket→ fixed in0.9.22-2urgency: not yet assigned
    sudo apt-get install --only-upgrade -y impacket

Debian trixie

Source: Debian Security Tracker

  • impacket→ fixed in0.9.22-2urgency: not yet assigned
    sudo apt-get install --only-upgrade -y impacket

Alpine v3.20

Source: Alpine secdb

  • py3-impacket→ fixed in0.9.23-r0
    apk update && apk add --upgrade py3-impacket

Alpine v3.21

Source: Alpine secdb

  • py3-impacket→ fixed in0.9.23-r0
    apk update && apk add --upgrade py3-impacket

Alpine edge

Source: Alpine secdb

  • py3-impacket→ fixed in0.9.23-r0
    apk update && apk add --upgrade py3-impacket

Alpine v3.18

Source: Alpine secdb

  • py3-impacket→ fixed in0.9.23-r0
    apk update && apk add --upgrade py3-impacket

Alpine v3.19

Source: Alpine secdb

  • py3-impacket→ fixed in0.9.23-r0
    apk update && apk add --upgrade py3-impacket
Are YOU affected by CVE-2021-31800?

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