Incorrect Conversion between Numeric Types Affecting firefox package, versions <88.0-1
Snyk CVSS
Attack Complexity
Low
User Interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Threat Intelligence
EPSS
0.18% (56th
percentile)
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Test your applications- Snyk ID SNYK-DEBIANUNSTABLE-FIREFOX-1251743
- published 20 Apr 2021
- disclosed 24 Jun 2021
Introduced: 20 Apr 2021
CVE-2021-23997 Open this link in a new tabHow to fix?
Upgrade Debian:unstable firefox to version 88.0-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
Due to unexpected data type conversions, a use-after-free could have occurred when interacting with the font cache. We presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Firefox < 88.