CVE-2020-26972
Last modified
CVE-2020-26972 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. The lifecycle of IPC Actors allows managed actors to outlive their manager actors; and the former must ensure that they are not attempting to use a dead actor they have a reference to. Such a check was omitted in WebGL, resulting in a use-after-free and a potentially exploitable crash. EPSS estimates a 1.29% chance of exploitation in the next 30 days.
Description
The lifecycle of IPC Actors allows managed actors to outlive their manager actors; and the former must ensure that they are not attempting to use a dead actor they have a reference to. Such a check was omitted in WebGL, resulting in a use-after-free and a potentially exploitable crash. This vulnerability affects Firefox < 84.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 84.0 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1671382Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2020-54/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1671382Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2020-54/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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