Use After Free Affecting thunderbird package, versions <1:91.4.1-1~deb11u1
Snyk CVSS
Attack Complexity
Low
User Interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Threat Intelligence
EPSS
0.25% (65th
percentile)
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Test your applications- Snyk ID SNYK-DEBIAN11-THUNDERBIRD-2314124
- published 10 Dec 2021
- disclosed 8 Dec 2021
Introduced: 8 Dec 2021
CVE-2021-43535 Open this link in a new tabHow to fix?
Upgrade Debian:11
thunderbird
to version 1:91.4.1-1~deb11u1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream thunderbird
package and not the thunderbird
package as distributed by Debian
.
See How to fix?
for Debian:11
relevant fixed versions and status.
A use-after-free could have occured when an HTTP2 session object was released on a different thread, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.3, and Firefox ESR < 91.3.