CVE-2021-23979
published 2021-02-26CVE-2021-23979: Mozilla developers reported memory safety bugs present in Firefox 85. Some of these bugs showed evidence of memory corruption and we presume that with enough…
PriorityP337high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
0.92%
56.1th percentile
Mozilla developers reported memory safety bugs present in Firefox 85. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 86.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | firefox | < firefox 86.0-1 (sid) | firefox 86.0-1 (sid) |
| mozilla | firefox | < 86 | 86 |
| mozilla | firefox | < 86.0 | 86.0 |
| mozilla | firefox | — | — |
| mozilla | firefox | >= 0 < 86.0+build3-0ubuntu0.16.04.1 | 86.0+build3-0ubuntu0.16.04.1 |
| mozilla | firefox | >= 0 < 86.0+build3-0ubuntu0.18.04.1 | 86.0+build3-0ubuntu0.18.04.1 |
| mozilla | firefox | >= 0 < 86.0+build3-0ubuntu0.20.04.1 | 86.0+build3-0ubuntu0.20.04.1 |
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
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GHSA
GHSA-h2wp-qp38-rjj4: Mozilla developers reported memory safety bugs present in Firefox 85
ghsa_unreviewed·2022-05-24
CVE-2021-23979 [HIGH] CWE-119 GHSA-h2wp-qp38-rjj4: Mozilla developers reported memory safety bugs present in Firefox 85
Mozilla developers reported memory safety bugs present in Firefox 85. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 86.
OSV
CVE-2021-23979: Mozilla developers reported memory safety bugs present in Firefox 85
osv·2021-02-26·CVSS 8.8
CVE-2021-23979 [HIGH] CVE-2021-23979: Mozilla developers reported memory safety bugs present in Firefox 85
Mozilla developers reported memory safety bugs present in Firefox 85. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 86.
Ubuntu
Firefox vulnerabilities
vendor_ubuntu·2021-02-26
CVE-2021-23971 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, obtain sensitive
information, conduct cross-site scripting (XSS) attacks, bypass HTTP auth
phishing warnings, or execute arbitrary code.
Instructions: After a standard system update you need to restart Firefox to make
all the necessary changes.
Debian
CVE-2021-23979: firefox - Mozilla developers reported memory safety bugs present in Firefox 85. Some of th...
vendor_debian·2021·CVSS 8.8
CVE-2021-23979 [HIGH] CVE-2021-23979: firefox - Mozilla developers reported memory safety bugs present in Firefox 85. Some of th...
Mozilla developers reported memory safety bugs present in Firefox 85. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 86.
Scope: local
sid: resolved (fixed in 86.0-1)
Mozilla
Mozilla Foundation Security Advisory 2021-07: CVE-2021-23979
vendor_mozilla·CVSS 8.8
CVE-2021-23979 [HIGH] Mozilla Foundation Security Advisory 2021-07: CVE-2021-23979
Mozilla Foundation Security Advisory 2021-07
CVE: CVE-2021-23979
Product: Firefox
Impact: high
Fixed in: Firefox 86
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1663222%2C1666607%2C1672120%2C1678463%2C1678927%2C1679560%2C1681297%2C1681684%2C1683490%2C1684377%2C1684902https://www.mozilla.org/security/advisories/mfsa2021-07/https://bugzilla.mozilla.org/buglist.cgi?bug_id=1663222%2C1666607%2C1672120%2C1678463%2C1678927%2C1679560%2C1681297%2C1681684%2C1683490%2C1684377%2C1684902https://www.mozilla.org/security/advisories/mfsa2021-07/
2021-02-26
Published