Use After Free Affecting firefox-esr package, versions <78.4.1esr-1
Snyk CVSS
Attack Complexity
Low
User Interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Threat Intelligence
EPSS
92.53% (99th
percentile)
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Test your applications- Snyk ID SNYK-DEBIAN12-FIREFOXESR-1546212
- published 10 Nov 2020
- disclosed 9 Dec 2020
Introduced: 10 Nov 2020
CVE-2020-26950 Open this link in a new tabHow to fix?
Upgrade Debian:12
firefox-esr
to version 78.4.1esr-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream firefox-esr
package and not the firefox-esr
package as distributed by Debian
.
See How to fix?
for Debian:12
relevant fixed versions and status.
In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.