CVE-2018-18500
CRITICAL 9.8EPSS 12.7%
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 NVD
- 9.8 CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS v2.0 NVD
- 7.5 HIGH
AV: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
Security advisories
- https://www.mozilla.org/security/advisories/mfsa2019-01
- https://www.mozilla.org/security/advisories/mfsa2019-02
- https://www.mozilla.org/security/advisories/mfsa2019-03
- http://www.securityfocus.com/bid/106781
- https://access.redhat.com/errata/RHSA-2019:0218
- https://access.redhat.com/errata/RHSA-2019:0219
- https://access.redhat.com/errata/RHSA-2019:0269
- https://access.redhat.com/errata/RHSA-2019:0270
- https://lists.debian.org/debian-lts-announce/2019/01/msg00025.html
- https://lists.debian.org/debian-lts-announce/2019/02/msg00024.html
- https://security.gentoo.org/glsa/201903-04
- https://usn.ubuntu.com/3874-1
- https://usn.ubuntu.com/3897-1
- https://www.debian.org/security/2019/dsa-4376
- https://www.debian.org/security/2019/dsa-4392