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CVE-2020-1763 · cross-distro fix matrix

CVE-2020-1763: An out-of-bounds buffer read flaw was found in the pluto daemon of libreswan from versions 3.27 till 3.31 where, an unauthenticated attacker could use this flaw to crash libreswan by sending specially-crafted IKEv1 Informational Exchange packets. The daemon respawns after the crash.

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

Fix per ecosystem

Each block below is a distro release where CVE-2020-1763 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

  • libreswan→ fixed in3.32-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y libreswan

Debian bookworm

Source: Debian Security Tracker

  • libreswan→ fixed in3.32-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y libreswan

Debian trixie

Source: Debian Security Tracker

  • libreswan→ fixed in3.32-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y libreswan

Alpine v3.20

Source: Alpine secdb

  • libreswan→ fixed in3.32-r0
    apk update && apk add --upgrade libreswan

Alpine v3.21

Source: Alpine secdb

  • libreswan→ fixed in3.32-r0
    apk update && apk add --upgrade libreswan

Alpine edge

Source: Alpine secdb

  • libreswan→ fixed in3.32-r0
    apk update && apk add --upgrade libreswan

Alpine v3.18

Source: Alpine secdb

  • libreswan→ fixed in3.32-r0
    apk update && apk add --upgrade libreswan

Alpine v3.19

Source: Alpine secdb

  • libreswan→ fixed in3.32-r0
    apk update && apk add --upgrade libreswan
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