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CVE-2019-11763

CVE-2019-11763

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Failure to correctly handle null bytes when processing HTML entities resulted in Firefox incorrectly parsing these entities. This could have led to HTML comment text being treated as HTML which could have led to XSS in a web application under certain conditions. It could have also led to HTML entities being masked from filters - enabling the use of entities to mask the actual characters of interest from filters. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.

CVSS 6.1 · Medium · EPSS 1.1% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • firefox

    Versions
    • before 70: Affected

    No fix published

  • thunderbird

    Versions
    • before 68.2: Affected

    No fix published

  • firefox esr

    Versions
    • before 68.2: Affected

    No fix published

  • firefox-esr Debian:12

    Affected ranges
    • ECOSYSTEM: < 68.2.0esr-1

    Update to 68.2.0esr-1

  • firefox-esr Debian:13

    Affected ranges
    • ECOSYSTEM: < 68.2.0esr-1

    Update to 68.2.0esr-1

  • firefox-esr Debian:14

    Affected ranges
    • ECOSYSTEM: < 68.2.0esr-1

    Update to 68.2.0esr-1

  • thunderbird Debian:12

    Affected ranges
    • ECOSYSTEM: < 1:68.2.1-1

    Update to 1:68.2.1-1

  • thunderbird Debian:13

    Affected ranges
    • ECOSYSTEM: < 1:68.2.1-1

    Update to 1:68.2.1-1

  • thunderbird Debian:14

    Affected ranges
    • ECOSYSTEM: < 1:68.2.1-1

    Update to 1:68.2.1-1

  • firefox Ubuntu:16.04:LTS

    Versions
    • 41.0.2+build2-0ubuntu1
    • 42.0+build2-0ubuntu1
    • 44.0+build3-0ubuntu2
    • 44.0.1+build1-0ubuntu1
    • 44.0.2+build1-0ubuntu1
    • 45.0+build2-0ubuntu1
    • 45.0.1+build1-0ubuntu1
    • 45.0.2+build1-0ubuntu1
    • 46.0+build5-0ubuntu0.16.04.2
    • 46.0.1+build1-0ubuntu0.16.04.2
    • 47.0+build3-0ubuntu0.16.04.1
    • 48.0+build2-0ubuntu0.16.04.1
    • 49.0+build4-0ubuntu0.16.04.1
    • 49.0.2+build2-0ubuntu0.16.04.2
    • 50.0+build2-0ubuntu0.16.04.2
    • 50.0.2+build1-0ubuntu0.16.04.1
    • 50.1.0+build2-0ubuntu0.16.04.1
    • 51.0.1+build2-0ubuntu0.16.04.1
    • 51.0.1+build2-0ubuntu0.16.04.2
    • 52.0+build2-0ubuntu0.16.04.1
    • 52.0.1+build2-0ubuntu0.16.04.1
    • 52.0.2+build1-0ubuntu0.16.04.1
    • 53.0+build6-0ubuntu0.16.04.1
    • 53.0.2+build1-0ubuntu0.16.04.2
    • 53.0.3+build1-0ubuntu0.16.04.2
    • 54.0+build3-0ubuntu0.16.04.1
    • 55.0.1+build2-0ubuntu0.16.04.2
    • 55.0.2+build1-0ubuntu0.16.04.1
    • 56.0+build6-0ubuntu0.16.04.1
    • 56.0+build6-0ubuntu0.16.04.2
    • 57.0+build4-0ubuntu0.16.04.5
    • 57.0+build4-0ubuntu0.16.04.6
    • 57.0.1+build2-0ubuntu0.16.04.1
    • 57.0.3+build1-0ubuntu0.16.04.1
    • 57.0.4+build1-0ubuntu0.16.04.1
    • 58.0+build6-0ubuntu0.16.04.1
    • 58.0.1+build1-0ubuntu0.16.04.1
    • 58.0.2+build1-0ubuntu0.16.04.1
    • 59.0+build5-0ubuntu0.16.04.1
    • 59.0.1+build1-0ubuntu0.16.04.1
    • 59.0.2+build1-0ubuntu0.16.04.1
    • 59.0.2+build1-0ubuntu0.16.04.3
    • 60.0+build2-0ubuntu0.16.04.1
    • 60.0.1+build2-0ubuntu0.16.04.1
    • 60.0.2+build1-0ubuntu0.16.04.1
    • 61.0+build3-0ubuntu0.16.04.2
    • 61.0.1+build1-0ubuntu0.16.04.1
    • 62.0+build2-0ubuntu0.16.04.3
    • 62.0+build2-0ubuntu0.16.04.4
    • 62.0+build2-0ubuntu0.16.04.5
    • 62.0.3+build1-0ubuntu0.16.04.2
    • 63.0+build2-0ubuntu0.16.04.2
    • 63.0.3+build1-0ubuntu0.16.04.1
    • 64.0+build3-0ubuntu0.16.04.1
    • 65.0+build2-0ubuntu0.16.04.1
    • 65.0.1+build2-0ubuntu0.16.04.1
    • 66.0+build3-0ubuntu0.16.04.2
    • 66.0.1+build1-0ubuntu0.16.04.1
    • 66.0.2+build1-0ubuntu0.16.04.1
    • 66.0.3+build1-0ubuntu0.16.04.1
    • 66.0.4+build3-0ubuntu0.16.04.1
    • 66.0.5+build1-0ubuntu0.16.04.1
    • 67.0+build2-0ubuntu0.16.04.1
    • 67.0.1+build1-0ubuntu0.16.04.1
    • 67.0.2+build2-0ubuntu0.16.04.1
    • 67.0.3+build1-0ubuntu0.16.04.1
    • 67.0.4+build1-0ubuntu0.16.04.1
    • 68.0+build3-0ubuntu0.16.04.1
    • 68.0.1+build1-0ubuntu0.16.04.1
    • 68.0.2+build1-0ubuntu0.16.04.1
    • 69.0+build2-0ubuntu0.16.04.4
    • 69.0.1+build1-0ubuntu0.16.04.1
    • 69.0.2+build1-0ubuntu0.16.04.1
    Affected ranges
    • ECOSYSTEM: < 70.0+build2-0ubuntu0.16.04.1

    Update to 70.0+build2-0ubuntu0.16.04.1

  • thunderbird Ubuntu:16.04:LTS

    Versions
    • 1:38.3.0+build1-0ubuntu2
    • 1:38.5.1+build2-0ubuntu1
    • 1:38.6.0+build1-0ubuntu1
    • 1:38.7.2+build1-0ubuntu0.16.04.1
    • 1:38.8.0+build1-0ubuntu0.16.04.1
    • 1:45.2.0+build1-0ubuntu0.16.04.1
    • 1:45.3.0+build1-0ubuntu0.16.04.2
    • 1:45.4.0+build1-0ubuntu0.16.04.1
    • 1:45.5.1+build1-0ubuntu0.16.04.1
    • 1:45.7.0+build1-0ubuntu0.16.04.1
    • 1:45.8.0+build1-0ubuntu0.16.04.1
    • 1:52.1.1+build1-0ubuntu0.16.04.1
    • 1:52.2.1+build1-0ubuntu0.16.04.1
    • 1:52.3.0+build1-0ubuntu0.16.04.1
    • 1:52.4.0+build1-0ubuntu0.16.04.2
    • 1:52.5.0+build1-0ubuntu0.16.04.1
    • 1:52.6.0+build1-0ubuntu0.16.04.1
    • 1:52.7.0+build1-0ubuntu0.16.04.1
    • 1:52.8.0+build1-0ubuntu0.16.04.1
    • 1:52.9.1+build3-0ubuntu0.16.04.1
    • 1:60.2.1+build1-0ubuntu0.16.04.4
    • 1:60.4.0+build2-0ubuntu0.16.04.1
    • 1:60.5.1+build2-0ubuntu0.16.04.1
    • 1:60.6.1+build2-0ubuntu0.16.04.1
    • 1:60.7.0+build1-0ubuntu0.16.04.1
    • 1:60.7.1+build1-0ubuntu0.16.04.1
    • 1:60.7.2+build2-0ubuntu0.16.04.1
    • 1:60.8.0+build1-0ubuntu0.16.04.2
    • 1:60.9.0+build1-0ubuntu0.16.04.2
    • 1:60.9.1+build1-0ubuntu0.16.04.1
    Affected ranges
    • ECOSYSTEM: < 1:68.7.0+build1-0ubuntu0.16.04.2

    Update to 1:68.7.0+build1-0ubuntu0.16.04.2

  • firefox Ubuntu:18.04:LTS

    Versions
    • 56.0+build6-0ubuntu1
    • 57.0.1+build2-0ubuntu1
    • 59.0.1+build1-0ubuntu1
    • 59.0.2+build1-0ubuntu1
    • 60.0+build2-0ubuntu1
    • 60.0.1+build2-0ubuntu0.18.04.1
    • 60.0.2+build1-0ubuntu0.18.04.1
    • 61.0+build3-0ubuntu0.18.04.1
    • 61.0.1+build1-0ubuntu0.18.04.1
    • 62.0+build2-0ubuntu0.18.04.3
    • 62.0+build2-0ubuntu0.18.04.4
    • 62.0+build2-0ubuntu0.18.04.5
    • 62.0.3+build1-0ubuntu0.18.04.1
    • 63.0+build2-0ubuntu0.18.04.2
    • 63.0.3+build1-0ubuntu0.18.04.1
    • 64.0+build3-0ubuntu0.18.04.1
    • 65.0+build2-0ubuntu0.18.04.1
    • 65.0.1+build2-0ubuntu0.18.04.1
    • 66.0+build3-0ubuntu0.18.04.1
    • 66.0.1+build1-0ubuntu0.18.04.1
    • 66.0.2+build1-0ubuntu0.18.04.1
    • 66.0.3+build1-0ubuntu0.18.04.1
    • 66.0.4+build3-0ubuntu0.18.04.1
    • 66.0.5+build1-0ubuntu0.18.04.1
    • 67.0+build2-0ubuntu0.18.04.1
    • 67.0.1+build1-0ubuntu0.18.04.1
    • 67.0.2+build2-0ubuntu0.18.04.1
    • 67.0.3+build1-0ubuntu0.18.04.1
    • 67.0.4+build1-0ubuntu0.18.04.1
    • 68.0+build3-0ubuntu0.18.04.1
    • 68.0.1+build1-0ubuntu0.18.04.1
    • 68.0.2+build1-0ubuntu0.18.04.1
    • 69.0+build2-0ubuntu0.18.04.1
    • 69.0.1+build1-0ubuntu0.18.04.1
    • 69.0.2+build1-0ubuntu0.18.04.1
    Affected ranges
    • ECOSYSTEM: < 70.0+build2-0ubuntu0.18.04.1

    Update to 70.0+build2-0ubuntu0.18.04.1

  • thunderbird Ubuntu:18.04:LTS

    Versions
    • 1:52.4.0+build1-0ubuntu2
    • 1:52.6.0+build1-0ubuntu1
    • 1:52.7.0+build1-0ubuntu1
    • 1:52.8.0+build1-0ubuntu0.18.04.1
    • 1:52.9.1+build3-0ubuntu0.18.04.1
    • 1:60.2.1+build1-0ubuntu0.18.04.2
    • 1:60.4.0+build2-0ubuntu0.18.04.1
    • 1:60.5.1+build2-0ubuntu0.18.04.1
    • 1:60.6.1+build2-0ubuntu0.18.04.1
    • 1:60.7.0+build1-0ubuntu0.18.04.1
    • 1:60.7.1+build1-0ubuntu0.18.04.1
    • 1:60.7.2+build2-0ubuntu0.18.04.1
    • 1:60.8.0+build1-0ubuntu0.18.04.1
    • 1:60.9.0+build1-0ubuntu0.18.04.1
    Affected ranges
    • ECOSYSTEM: < 1:68.2.1+build1-0ubuntu0.18.04.1

    Update to 1:68.2.1+build1-0ubuntu0.18.04.1

  • mozjs52 Ubuntu:18.04:LTS

    Versions
    • 52.3.1-0ubuntu3
    • 52.3.1-7fakesync1
    • 52.8.1-0ubuntu0.18.04.1
    • 52.9.1-0ubuntu0.18.04.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • mozjs38 Ubuntu:18.04:LTS

    Versions
    • 38.8.0~repack1-0ubuntu1
    • 38.8.0~repack1-0ubuntu3
    • 38.8.0~repack1-0ubuntu4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • firefox Ubuntu:20.04:LTS

    Versions
    • 69.0.3+build1-0ubuntu1
    Affected ranges
    • ECOSYSTEM: < 70.0+build2-0ubuntu1

    Update to 70.0+build2-0ubuntu1

  • mozjs52 Ubuntu:20.04:LTS

    Versions
    • 52.9.1-1build1
    • 52.9.1-1ubuntu3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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