CVE-2021-23997
published 2021-06-24CVE-2021-23997: 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…
PriorityP343high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
0.82%
52.6th percentile
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.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | firefox | < firefox 88.0-1 (sid) | firefox 88.0-1 (sid) |
| mozilla | firefox | < 88.0 | 88.0 |
| mozilla | firefox | — | — |
| mozilla | firefox | >= 0 < 88.0+build2-0ubuntu0.16.04.1 | 88.0+build2-0ubuntu0.16.04.1 |
| mozilla | firefox | >= 0 < 88.0+build2-0ubuntu0.18.04.2 | 88.0+build2-0ubuntu0.18.04.2 |
| mozilla | firefox | >= 0 < 88.0+build2-0ubuntu0.20.04.1 | 88.0+build2-0ubuntu0.20.04.1 |
| mozilla | firefox | >= unspecified < 88 | 88 |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvdv2.06.8MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P
osv8.8HIGH
vendor_debian8.8HIGH
vendor_ubuntu8.8HIGH
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Ubuntu
Firefox vulnerabilities
vendor_ubuntu·2021-04-26·CVSS 8.8
CVE-2021-24000 [HIGH] Firefox vulnerabilities
Title: Firefox vulnerabilities
Summary: Firefox could be made to crash or run programs as your login if it
opened a malicious website.
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. (CVE-2021-23994,
CVE-2021-23996, CVE-2021-23997, CVE-2021-23998, CVE-2021-23999,
CVE-2021-24000, CVE-2021-24001, CVE-2021-29945, CVE-2021-29946,
CVE-2021-29947)
A use-after-free was discovered when Responsive Design Mode was
enabled. If a user were tricked into opening a specially crafted
website with Responsive Design Mode enabled,
Debian
CVE-2021-23997: firefox - Due to unexpected data type conversions, a use-after-free could have occurred wh...
vendor_debian·2021·CVSS 8.8
CVE-2021-23997 [HIGH] CVE-2021-23997: firefox - Due to unexpected data type conversions, a use-after-free could have occurred wh...
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.
Scope: local
sid: resolved (fixed in 88.0-1)
Mozilla
Mozilla Foundation Security Advisory 2021-16: CVE-2021-23997
vendor_mozilla·CVSS 8.8
CVE-2021-23997 [HIGH] Mozilla Foundation Security Advisory 2021-16: CVE-2021-23997
Mozilla Foundation Security Advisory 2021-16
CVE: CVE-2021-23997
Product: Firefox
Impact: high
Fixed in: Firefox 88
GHSA
GHSA-v254-2gqm-j372: Due to unexpected data type conversions, a use-after-free could have occurred when interacting with the font cache
ghsa_unreviewed·2022-05-24
CVE-2021-23997 [HIGH] CWE-681 GHSA-v254-2gqm-j372: Due to unexpected data type conversions, a use-after-free could have occurred when interacting with the font cache
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.
OSV
firefox vulnerabilities
osv·2021-04-26·CVSS 8.8
CVE-2021-23994 [HIGH] firefox vulnerabilities
firefox vulnerabilities
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. (CVE-2021-23994,
CVE-2021-23996, CVE-2021-23997, CVE-2021-23998, CVE-2021-23999,
CVE-2021-24000, CVE-2021-24001, CVE-2021-29945, CVE-2021-29946,
CVE-2021-29947)
A use-after-free was discovered when Responsive Design Mode was
enabled. If a user were tricked into opening a specially crafted
website with Responsive Design Mode enabled, an attacker could
potentially exploit this to cause a denial of service, or execute
arbitrary code. (CVE-2021-2
OSV
CVE-2021-23997: Due to unexpected data type conversions, a use-after-free could have occurred when interacting with the font cache
osv·2021-04-19·CVSS 8.8
CVE-2021-23997 [HIGH] CVE-2021-23997: Due to unexpected data type conversions, a use-after-free could have occurred when interacting with the font cache
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.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2021-06-24
Published