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CVE-2021-28117 · cross-distro fix matrix

CVE-2021-28117: libdiscover/backends/KNSBackend/KNSResource.cpp in KDE Discover before 5.21.3 automatically creates links to potentially dangerous URLs (that are neither https:// nor http://) based on the content of the store.kde.org web site. (5.18.7 is also a fixed version.)

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

Fix per ecosystem

Each block below is a distro release where CVE-2021-28117 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

  • plasma-discover→ fixed in5.20.5-3urgency: not yet assigned
    sudo apt-get install --only-upgrade -y plasma-discover

Debian bookworm

Source: Debian Security Tracker

  • plasma-discover→ fixed in5.20.5-3urgency: not yet assigned
    sudo apt-get install --only-upgrade -y plasma-discover

Debian trixie

Source: Debian Security Tracker

  • plasma-discover→ fixed in5.20.5-3urgency: not yet assigned
    sudo apt-get install --only-upgrade -y plasma-discover

Alpine v3.20

Source: Alpine secdb

  • discover→ fixed in5.21.3-r0
    apk update && apk add --upgrade discover

Alpine v3.21

Source: Alpine secdb

  • discover→ fixed in5.21.3-r0
    apk update && apk add --upgrade discover

Alpine edge

Source: Alpine secdb

  • discover→ fixed in5.21.3-r0
    apk update && apk add --upgrade discover

Alpine v3.18

Source: Alpine secdb

  • discover→ fixed in5.21.3-r0
    apk update && apk add --upgrade discover

Alpine v3.19

Source: Alpine secdb

  • discover→ fixed in5.21.3-r0
    apk update && apk add --upgrade discover
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