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CVE-2021-23997

Status Candidate

Overview

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.

Related Files

Ubuntu Security Notice USN-4926-1
Posted Apr 27, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4926-1 - Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, spoof the browser UI, bypass security restrictions, trick the user into disclosing confidential information, or execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, spoof
systems | linux, ubuntu
advisories | CVE-2021-23994, CVE-2021-23995, CVE-2021-23996, CVE-2021-23997, CVE-2021-23998, CVE-2021-24000, CVE-2021-24001, CVE-2021-24002, CVE-2021-29947
SHA-256 | f55c2332782fe26e72bd86b4970020318554061cc3558a83e9597678bbf3463c
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