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CVE-2018-18500 PUBLISHED

A use-after-free vulnerability can occur while parsing an HTML5 stream in concert with custom HTML elements. This results in the stream parser object being freed while still in use, leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 60.5, Firefox ESR < 60.5, and Firefox < 65.

EPSS 28.23% · 96.5th percentile

Risk Scores

EPSS Score
28.23%
96.5th percentile

Affected Products

VendorProductVersions
Ubuntu:20.04:LTSmozjs5252.9.1-1build1, 0, 52.9.1-1ubuntu3
Ubuntu:18.04:LTSthunderbird1:52.9.1+build3-0ubuntu0.18.04.1, 1:52.8.0+build1-0ubuntu0.18.04.1, 1:52.7.0+build1-0ubuntu1
Ubuntu:16.04:LTSfirefox60.0.1+build2-0ubuntu0.16.04.1, 60.0+build2-0ubuntu0.16.04.1, 59.0.2+build1-0ubuntu0.16.04.3
Ubuntu:14.04:LTSthunderbird1:52.5.0+build1-0ubuntu0.14.04.1, 0, 1:24.0+build1-0ubuntu1
Ubuntu:14.04:LTSfirefox60.0.2+build1-0ubuntu0.14.04.1, 31.0+build1-0ubuntu0.14.04.1, 30.0+build1-0ubuntu0.14.04.3
Ubuntu:18.04:LTSmozjs520, 52.3.1-0ubuntu3, 52.3.1-7fakesync1
Ubuntu:16.04:LTSthunderbird1:45.5.1+build1-0ubuntu0.16.04.1, 1:45.7.0+build1-0ubuntu0.16.04.1, 1:45.8.0+build1-0ubuntu0.16.04.1
Ubuntu:18.04:LTSmozjs380, 38.8.0~repack1-0ubuntu4, 38.8.0~repack1-0ubuntu1
Ubuntu:18.04:LTSfirefox64.0+build3-0ubuntu0.18.04.1, 56.0+build6-0ubuntu1, 57.0.1+build2-0ubuntu1

Timeline

References

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