CVE-2021-29966
published 2021-06-24CVE-2021-29966: Mozilla developers reported memory safety bugs present in Firefox 88. Some of these bugs showed evidence of memory corruption and we presume that with enough…
PriorityP337high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
1.01%
59.0th percentile
Mozilla developers reported memory safety bugs present in Firefox 88. 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 < 89.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | firefox | < firefox 89.0-1 (sid) | firefox 89.0-1 (sid) |
| mozilla | firefox | — | — |
| mozilla | firefox | >= 0 < 89.0+build2-0ubuntu0.18.04.2 | 89.0+build2-0ubuntu0.18.04.2 |
| mozilla | firefox | >= 0 < 89.0+build2-0ubuntu0.20.04.2 | 89.0+build2-0ubuntu0.20.04.2 |
| mozilla | firefox | >= 78.11.0 < 89.0 | 89.0 |
| mozilla | firefox | >= unspecified < 89 | 89 |
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_ubuntu4.3MEDIUM
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GHSA
GHSA-p2f5-76jq-f5vv: Mozilla developers reported memory safety bugs present in Firefox 88
ghsa_unreviewed·2022-05-24
CVE-2021-29966 [HIGH] CWE-119 GHSA-p2f5-76jq-f5vv: Mozilla developers reported memory safety bugs present in Firefox 88
Mozilla developers reported memory safety bugs present in Firefox 88. 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 < 89.
OSV
CVE-2021-29966: Mozilla developers reported memory safety bugs present in Firefox 88
osv·2021-06-02·CVSS 8.8
CVE-2021-29966 [HIGH] CVE-2021-29966: Mozilla developers reported memory safety bugs present in Firefox 88
Mozilla developers reported memory safety bugs present in Firefox 88. 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 < 89.
OSV
firefox vulnerabilities
osv·2021-06-02·CVSS 4.3
CVE-2021-29959 [MEDIUM] 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, re-enable
camera devices without an additional permission prompt, spoof the browser
UI, or execute arbitrary code. (CVE-2021-29959, CVE-2021-29961,
CVE-2021-29966, CVE-2021-29967)
It was discovered that filenames printed from private browsing mode were
incorrectly retained in preferences. A local attacker could potentially
exploit this to obtain sensitive information. (CVE-2021-29960)
Ubuntu
Firefox vulnerabilities
vendor_ubuntu·2021-06-02·CVSS 4.3
CVE-2021-29960 [MEDIUM] 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, re-enable
camera devices without an additional permission prompt, spoof the browser
UI, or execute arbitrary code. (CVE-2021-29959, CVE-2021-29961,
CVE-2021-29966, CVE-2021-29967)
It was discovered that filenames printed from private browsing mode were
incorrectly retained in preferences. A local attacker could potentially
exploit this to obtain sensitive information. (CVE-2021-29960)
Instructions: After a standard system update you need to restart Firefox to make
Debian
CVE-2021-29966: firefox - Mozilla developers reported memory safety bugs present in Firefox 88. Some of th...
vendor_debian·2021·CVSS 8.8
CVE-2021-29966 [HIGH] CVE-2021-29966: firefox - Mozilla developers reported memory safety bugs present in Firefox 88. Some of th...
Mozilla developers reported memory safety bugs present in Firefox 88. 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 < 89.
Scope: local
sid: resolved (fixed in 89.0-1)
Mozilla
Mozilla Foundation Security Advisory 2021-23: CVE-2021-29966
vendor_mozilla·CVSS 8.8
CVE-2021-29966 [HIGH] Mozilla Foundation Security Advisory 2021-23: CVE-2021-29966
Mozilla Foundation Security Advisory 2021-23
CVE: CVE-2021-29966
Product: Firefox
Impact: moderate
Fixed in: Firefox 89
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1660307%2C1686154%2C1702948%2C1708124https://security.gentoo.org/glsa/202107-09https://www.mozilla.org/security/advisories/mfsa2021-23/https://bugzilla.mozilla.org/buglist.cgi?bug_id=1660307%2C1686154%2C1702948%2C1708124https://security.gentoo.org/glsa/202107-09https://www.mozilla.org/security/advisories/mfsa2021-23/
2021-06-24
Published