CVE-2018-18500

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.

CVSS v3.0

9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS

12.66% chance of exploitation in the next 30 days, 96th percentile

Published

2019-02-05

Updated

2024-08-05

Proof-of-concept exploits (1)

• sophoslabs/CVE-2018-1850061★ · 2019-04-18

References

• CVE Record
• NVD entry

Related

• CVE-2019-0888
• CVE-2018-18489
• CVE-2018-18520
• CVE-2018-18485
• CVE-2018-18521
• CVE-2018-18484