CVE-2019-20503
xul-ext-lightning: usrsctp before 2019-12-20 has out-of-bounds reads in sctp_load_addresses_from_init.
CVE-2019-20503 is fixed in 14 products on 1 platform, first by firefox 74.0+build3-0ubuntu0.18.04.1, released March 10, 2020. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
6.5
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0314
87th percentile
usrsctp before 2019-12-20 has out-of-bounds reads in sctp_load_addresses_from_init.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| chromium-browser · Ubuntu 18.04.6 LTS (bionic) | 80.0.3987.149-0ubuntu0.18.04.1 | chromium-browser 80.0.3987.149-0ubuntu0.18.04.1 | Mar 23, 2020 |
| chromium-browser-l10n · Ubuntu 18.04.6 LTS (bionic) | 80.0.3987.149-0ubuntu0.18.04.1 | chromium-browser-l10n 80.0.3987.149-0ubuntu0.18.04.1 | Mar 23, 2020 |
| chromium-chromedriver · Ubuntu 18.04.6 LTS (bionic) | 80.0.3987.149-0ubuntu0.18.04.1 | chromium-chromedriver 80.0.3987.149-0ubuntu0.18.04.1 | Mar 23, 2020 |
| chromium-codecs-ffmpeg · Ubuntu 18.04.6 LTS (bionic) | 80.0.3987.149-0ubuntu0.18.04.1 | chromium-codecs-ffmpeg 80.0.3987.149-0ubuntu0.18.04.1 | Mar 23, 2020 |
| chromium-codecs-ffmpeg-extra · Ubuntu 18.04.6 LTS (bionic) | 80.0.3987.149-0ubuntu0.18.04.1 | chromium-codecs-ffmpeg-extra 80.0.3987.149-0ubuntu0.18.04.1 | Mar 23, 2020 |
| firefox · RHEL 8 | 0:68.6.0-1.el8_1 | RHSA-2020:0820 | Mar 16, 2020 |
| firefox · Ubuntu 18.04.6 LTS (bionic) | 74.0+build3-0ubuntu0.18.04.1 | firefox 74.0+build3-0ubuntu0.18.04.1 | Mar 10, 2020 |
| firefox · Ubuntu 20.04 LTS (focal) | 74.0+build3-0ubuntu1 | firefox 74.0+build3-0ubuntu1 | Mar 10, 2020 |
| firefox · Ubuntu 24.10 (oracular) | 74.0+build3-0ubuntu1 | firefox 74.0+build3-0ubuntu1 | Jan 16, 2026 |
| firefox · Ubuntu 25.04 (plucky) | 74.0+build3-0ubuntu1 | firefox 74.0+build3-0ubuntu1 | Jan 16, 2026 |
| firefox · ol 8 | 0:68.6.0-1.0.1.el8_1 | ELSA-2020-0820 | Mar 16, 2020 |
| firefox-geckodriver · Ubuntu 18.04.6 LTS (bionic) | 74.0+build3-0ubuntu0.18.04.1 | firefox-geckodriver 74.0+build3-0ubuntu0.18.04.1 | Mar 10, 2020 |
| firefox-geckodriver · Ubuntu 20.04 LTS (focal) | 74.0+build3-0ubuntu1 | firefox-geckodriver 74.0+build3-0ubuntu1 | Mar 10, 2020 |
| firefox-mozsymbols · Ubuntu 18.04.6 LTS (bionic) | 74.0+build3-0ubuntu0.18.04.1 | firefox-mozsymbols 74.0+build3-0ubuntu0.18.04.1 | Mar 10, 2020 |
| firefox-mozsymbols · Ubuntu 20.04 LTS (focal) | 74.0+build3-0ubuntu1 | firefox-mozsymbols 74.0+build3-0ubuntu1 | Mar 10, 2020 |
| thunderbird · RHEL 8 | 0:68.6.0-1.el8_1 | RHSA-2020:0919 | Mar 23, 2020 |
| thunderbird · Ubuntu 18.04.6 LTS (bionic) | 1:68.7.0+build1-0ubuntu0.18.04.1 | thunderbird 1:68.7.0+build1-0ubuntu0.18.04.1 | Apr 6, 2020 |
| thunderbird · Ubuntu 20.04 LTS (focal) | 1:68.6.0+build2-0ubuntu1 | thunderbird 1:68.6.0+build2-0ubuntu1 | Mar 10, 2020 |
| thunderbird · Ubuntu 24.10 (oracular) | 1:68.6.0+build2-0ubuntu1 | thunderbird 1:68.6.0+build2-0ubuntu1 | Jan 16, 2026 |
| thunderbird · Ubuntu 25.04 (plucky) | 1:68.6.0+build2-0ubuntu1 | thunderbird 1:68.6.0+build2-0ubuntu1 | Jan 16, 2026 |
| thunderbird · ol 8 | 0:68.6.0-1.0.1.el8_1 | ELSA-2020-0919 | Mar 23, 2020 |
| thunderbird-gnome-support · Ubuntu 18.04.6 LTS (bionic) | 1:68.7.0+build1-0ubuntu0.18.04.1 | thunderbird-gnome-support 1:68.7.0+build1-0ubuntu0.18.04.1 | Apr 6, 2020 |
| thunderbird-gnome-support · Ubuntu 20.04 LTS (focal) | 1:68.6.0+build2-0ubuntu1 | thunderbird-gnome-support 1:68.6.0+build2-0ubuntu1 | Mar 10, 2020 |
| thunderbird-mozsymbols · Ubuntu 18.04.6 LTS (bionic) | 1:68.7.0+build1-0ubuntu0.18.04.1 | thunderbird-mozsymbols 1:68.7.0+build1-0ubuntu0.18.04.1 | Apr 6, 2020 |
| thunderbird-mozsymbols · Ubuntu 20.04 LTS (focal) | 1:68.6.0+build2-0ubuntu1 | thunderbird-mozsymbols 1:68.6.0+build2-0ubuntu1 | Mar 10, 2020 |
| xul-ext-calendar-timezones · Ubuntu 18.04.6 LTS (bionic) | 1:68.7.0+build1-0ubuntu0.18.04.1 | xul-ext-calendar-timezones 1:68.7.0+build1-0ubuntu0.18.04.1 | Apr 6, 2020 |
| xul-ext-calendar-timezones · Ubuntu 20.04 LTS (focal) | 1:68.6.0+build2-0ubuntu1 | xul-ext-calendar-timezones 1:68.6.0+build2-0ubuntu1 | Mar 10, 2020 |
| xul-ext-gdata-provider · Ubuntu 18.04.6 LTS (bionic) | 1:68.7.0+build1-0ubuntu0.18.04.1 | xul-ext-gdata-provider 1:68.7.0+build1-0ubuntu0.18.04.1 | Apr 6, 2020 |
| xul-ext-gdata-provider · Ubuntu 20.04 LTS (focal) | 1:68.6.0+build2-0ubuntu1 | xul-ext-gdata-provider 1:68.6.0+build2-0ubuntu1 | Mar 10, 2020 |
| xul-ext-lightning · Ubuntu 18.04.6 LTS (bionic) | 1:68.7.0+build1-0ubuntu0.18.04.1 | xul-ext-lightning 1:68.7.0+build1-0ubuntu0.18.04.1 | Apr 6, 2020 |
| xul-ext-lightning · Ubuntu 20.04 LTS (focal) | 1:68.6.0+build2-0ubuntu1 | xul-ext-lightning 1:68.6.0+build2-0ubuntu1 | Mar 10, 2020 |
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