CVE-2018-18500
critical
CVSS v3
—
CVSS v2
—
VIR risk
9.5
Description
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.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2018-18500
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2018-18500.html
Vendor advisory: arch — https://security.archlinux.org/ASA-201902-2
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 65.0-1 | |
| sles | affected | | |
| debian | sid | fixed | 65.0-1 |
| debian | bookworm | fixed | 60.5.0esr-1 |
| debian | bullseye | fixed | 60.5.0esr-1 |
| debian | forky | fixed | 60.5.0esr-1 |
| debian | trixie | fixed | 60.5.0esr-1 |
References
Verify integrity in audit chain (admin only). AS-IS.