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CVE-2023-6865 · cross-distro fix matrix

CVE-2023-6865: `EncryptingOutputStream` was susceptible to exposing uninitialized data. This issue could only be abused in order to write data to a local disk which may have implications for private browsing mode. This vulnerability affects Firefox ESR < 115.6 and Firefox < 121.

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

Fix per ecosystem

Each block below is a distro release where CVE-2023-6865 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

  • firefox-esr→ fixed in115.6.0esr-1~deb11u1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y firefox-esr

Debian bookworm

Source: Debian Security Tracker

  • firefox-esr→ fixed in115.6.0esr-1~deb12u1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y firefox-esr

Debian trixie

Source: Debian Security Tracker

  • firefox-esr→ fixed in115.6.0esr-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y firefox-esr

Alpine v3.20

Source: Alpine secdb

  • firefox-esr→ fixed in115.6.0-r0
    apk update && apk add --upgrade firefox-esr

Alpine v3.21

Source: Alpine secdb

  • firefox-esr→ fixed in115.6.0-r0
    apk update && apk add --upgrade firefox-esr

Alpine edge

Source: Alpine secdb

  • firefox-esr→ fixed in115.6.0-r0
    apk update && apk add --upgrade firefox-esr

Alpine v3.18

Source: Alpine secdb

  • firefox-esr→ fixed in115.6.0-r0
    apk update && apk add --upgrade firefox-esr

Alpine v3.19

Source: Alpine secdb

  • firefox-esr→ fixed in115.6.0-r0
    apk update && apk add --upgrade firefox-esr
Are YOU affected by CVE-2023-6865?

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