CVE-2019-15903

Python 3.6 and 2 others: Out-of-bounds Read

CVE-2019-15903 is fixed in 20 products on 2 platforms, first by chromium-browser 78.0.3904.70-0ubuntu1, released September 3, 2019. 2 other affected products have no fix yet. It is not reported as exploited. Patch Radar priority: High.

HighFixed on 2 platforms
CVSS
7.5
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0664
93rd percentile

In libexpat before 2.2.8, crafted XML input could fool the parser into changing from DTD parsing to document parsing too early; a consecutive call to XML_GetCurrentLineNumber (or XML_GetCurrentColumnNumber) then resulted in a heap-based buffer over-read.

Where it's fixed

ProductFixed inFixReleased
Windows apps
Python 3.7 3.7.5 Python 3.7 3.7.5 Oct 14, 2019
Linux
chromium-browser · Ubuntu 18.04.6 LTS (bionic) 78.0.3904.70-0ubuntu0.18.04.2 chromium-browser 78.0.3904.70-0ubuntu0.18.04.2 Nov 25, 2019
chromium-browser · Ubuntu 20.04 LTS (focal) 78.0.3904.70-0ubuntu1 chromium-browser 78.0.3904.70-0ubuntu1 Sep 3, 2019
chromium-browser · Ubuntu 24.10 (oracular) 78.0.3904.70-0ubuntu1 chromium-browser 78.0.3904.70-0ubuntu1 Sep 4, 2019
chromium-browser · Ubuntu 25.04 (plucky) 78.0.3904.70-0ubuntu1 chromium-browser 78.0.3904.70-0ubuntu1 Sep 4, 2019
chromium-browser-l10n · Ubuntu 18.04.6 LTS (bionic) 78.0.3904.70-0ubuntu0.18.04.2 chromium-browser-l10n 78.0.3904.70-0ubuntu0.18.04.2 Nov 25, 2019
chromium-browser-l10n · Ubuntu 20.04 LTS (focal) 78.0.3904.70-0ubuntu1 chromium-browser-l10n 78.0.3904.70-0ubuntu1 Sep 3, 2019
chromium-browser-l10n · Ubuntu 24.10 (oracular) 78.0.3904.70-0ubuntu1 chromium-browser-l10n 78.0.3904.70-0ubuntu1 Sep 4, 2019
chromium-browser-l10n · Ubuntu 25.04 (plucky) 78.0.3904.70-0ubuntu1 chromium-browser-l10n 78.0.3904.70-0ubuntu1 Sep 4, 2019
chromium-chromedriver · Ubuntu 18.04.6 LTS (bionic) 78.0.3904.70-0ubuntu0.18.04.2 chromium-chromedriver 78.0.3904.70-0ubuntu0.18.04.2 Nov 25, 2019
chromium-chromedriver · Ubuntu 20.04 LTS (focal) 78.0.3904.70-0ubuntu1 chromium-chromedriver 78.0.3904.70-0ubuntu1 Sep 3, 2019
chromium-chromedriver · Ubuntu 24.10 (oracular) 78.0.3904.70-0ubuntu1 chromium-chromedriver 78.0.3904.70-0ubuntu1 Sep 4, 2019
chromium-chromedriver · Ubuntu 25.04 (plucky) 78.0.3904.70-0ubuntu1 chromium-chromedriver 78.0.3904.70-0ubuntu1 Sep 4, 2019
chromium-codecs-ffmpeg · Ubuntu 18.04.6 LTS (bionic) 78.0.3904.70-0ubuntu0.18.04.2 chromium-codecs-ffmpeg 78.0.3904.70-0ubuntu0.18.04.2 Nov 25, 2019
chromium-codecs-ffmpeg · Ubuntu 20.04 LTS (focal) 78.0.3904.70-0ubuntu1 chromium-codecs-ffmpeg 78.0.3904.70-0ubuntu1 Sep 3, 2019
chromium-codecs-ffmpeg · Ubuntu 24.10 (oracular) 78.0.3904.70-0ubuntu1 chromium-codecs-ffmpeg 78.0.3904.70-0ubuntu1 Sep 4, 2019
chromium-codecs-ffmpeg · Ubuntu 25.04 (plucky) 78.0.3904.70-0ubuntu1 chromium-codecs-ffmpeg 78.0.3904.70-0ubuntu1 Sep 4, 2019
chromium-codecs-ffmpeg-extra · Ubuntu 18.04.6 LTS (bionic) 78.0.3904.70-0ubuntu0.18.04.2 chromium-codecs-ffmpeg-extra 78.0.3904.70-0ubuntu0.18.04.2 Nov 25, 2019
chromium-codecs-ffmpeg-extra · Ubuntu 20.04 LTS (focal) 78.0.3904.70-0ubuntu1 chromium-codecs-ffmpeg-extra 78.0.3904.70-0ubuntu1 Sep 3, 2019
chromium-codecs-ffmpeg-extra · Ubuntu 24.10 (oracular) 78.0.3904.70-0ubuntu1 chromium-codecs-ffmpeg-extra 78.0.3904.70-0ubuntu1 Sep 4, 2019
chromium-codecs-ffmpeg-extra · Ubuntu 25.04 (plucky) 78.0.3904.70-0ubuntu1 chromium-codecs-ffmpeg-extra 78.0.3904.70-0ubuntu1 Sep 4, 2019
expat · RHEL 8 0:2.2.5-4.el8 RHSA-2020:4484 Nov 4, 2020
expat · Ubuntu 18.04.6 LTS (bionic) 2.2.5-3ubuntu0.2 expat 2.2.5-3ubuntu0.2 Sep 3, 2019
expat · ol 8 0:2.2.5-4.el8 ELSA-2020-4484 Nov 10, 2020
expat-devel · RHEL 8 0:2.2.5-4.el8 RHSA-2020:4484 Nov 4, 2020
expat-devel · ol 8 0:2.2.5-4.el8 ELSA-2020-4484 Nov 10, 2020
firefox · RHEL 8 0:68.2.0-2.el8_0 RHSA-2019:3196 Oct 24, 2019
firefox · Ubuntu 18.04.6 LTS (bionic) 70.0+build2-0ubuntu0.18.04.1 firefox 70.0+build2-0ubuntu0.18.04.1 Jul 9, 2020
firefox · Ubuntu 20.04 LTS (focal) 70.0+build2-0ubuntu1 firefox 70.0+build2-0ubuntu1 Jul 9, 2020
firefox · Ubuntu 24.10 (oracular) 70.0+build2-0ubuntu1 firefox 70.0+build2-0ubuntu1 Sep 4, 2019
firefox · Ubuntu 25.04 (plucky) 70.0+build2-0ubuntu1 firefox 70.0+build2-0ubuntu1 Sep 4, 2019
firefox-geckodriver · Ubuntu 18.04.6 LTS (bionic) 70.0+build2-0ubuntu0.18.04.1 firefox-geckodriver 70.0+build2-0ubuntu0.18.04.1 Jul 9, 2020
firefox-geckodriver · Ubuntu 20.04 LTS (focal) 70.0+build2-0ubuntu1 firefox-geckodriver 70.0+build2-0ubuntu1 Jul 9, 2020
firefox-mozsymbols · Ubuntu 18.04.6 LTS (bionic) 70.0+build2-0ubuntu0.18.04.1 firefox-mozsymbols 70.0+build2-0ubuntu0.18.04.1 Jul 9, 2020
firefox-mozsymbols · Ubuntu 20.04 LTS (focal) 70.0+build2-0ubuntu1 firefox-mozsymbols 70.0+build2-0ubuntu1 Jul 9, 2020
libexpat1 · Ubuntu 18.04.6 LTS (bionic) 2.2.5-3ubuntu0.2 libexpat1 2.2.5-3ubuntu0.2 Sep 3, 2019
libxmltok1 · Ubuntu 18.04.6 LTS (bionic) 1.2-4ubuntu0.18.04.1~esm4 libxmltok1 1.2-4ubuntu0.18.04.1~esm4 Jan 10, 2022
libxmltok1 · Ubuntu 20.04 LTS (focal) 1.2-4ubuntu0.20.04.1~esm4 libxmltok1 1.2-4ubuntu0.20.04.1~esm4 Jan 10, 2022
libxmltok1 · Ubuntu 22.04.1 LTS (jammy) 1.2-4ubuntu0.22.04.1~esm4 libxmltok1 1.2-4ubuntu0.22.04.1~esm4 Jan 10, 2022
libxmltok1t64 · Ubuntu 24.04.5 LTS (noble) 1.2-4.1ubuntu2.24.0.4.1+esm2 libxmltok1t64 1.2-4.1ubuntu2.24.0.4.1+esm2 Jan 10, 2022
libxmltok1t64 · Ubuntu 24.10 (oracular) 1.2-4.1ubuntu3.1 libxmltok1t64 1.2-4.1ubuntu3.1 Sep 4, 2019
thunderbird · RHEL 8 0:68.2.0-1.el8_0 RHSA-2019:3237 Oct 29, 2019
thunderbird · Ubuntu 18.04.6 LTS (bionic) 1:68.2.1+build1-0ubuntu0.18.04.1 thunderbird 1:68.2.1+build1-0ubuntu0.18.04.1 Oct 22, 2019
thunderbird · Ubuntu 24.10 (oracular) 1:68.2.0+build1.1-0ubuntu1 thunderbird 1:68.2.0+build1.1-0ubuntu1 Sep 4, 2019
thunderbird · Ubuntu 25.04 (plucky) 1:68.2.0+build1.1-0ubuntu1 thunderbird 1:68.2.0+build1.1-0ubuntu1 Sep 4, 2019
thunderbird · ol 8 0:68.2.0-1.0.1.el8_0 ELSA-2019-3237 Oct 30, 2019
thunderbird-gnome-support · Ubuntu 18.04.6 LTS (bionic) 1:68.2.1+build1-0ubuntu0.18.04.1 thunderbird-gnome-support 1:68.2.1+build1-0ubuntu0.18.04.1 Oct 22, 2019
thunderbird-mozsymbols · Ubuntu 18.04.6 LTS (bionic) 1:68.2.1+build1-0ubuntu0.18.04.1 thunderbird-mozsymbols 1:68.2.1+build1-0ubuntu0.18.04.1 Oct 22, 2019
xul-ext-calendar-timezones · Ubuntu 18.04.6 LTS (bionic) 1:68.2.1+build1-0ubuntu0.18.04.1 xul-ext-calendar-timezones 1:68.2.1+build1-0ubuntu0.18.04.1 Oct 22, 2019
xul-ext-gdata-provider · Ubuntu 18.04.6 LTS (bionic) 1:68.2.1+build1-0ubuntu0.18.04.1 xul-ext-gdata-provider 1:68.2.1+build1-0ubuntu0.18.04.1 Oct 22, 2019
xul-ext-lightning · Ubuntu 18.04.6 LTS (bionic) 1:68.2.1+build1-0ubuntu0.18.04.1 xul-ext-lightning 1:68.2.1+build1-0ubuntu0.18.04.1 Oct 22, 2019
No fix yet
Python 3.5 (Windows apps) No fix yet no-fix n/a
Python 3.6 (Windows apps) No fix yet no-fix n/a

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