CVE-2021-23995
published 2021-06-24CVE-2021-23995: When Responsive Design Mode was enabled, it used references to objects that were previously freed. We presume that with enough effort this could have been…
PriorityP344high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
1.21%
64.8th percentile
When Responsive Design Mode was enabled, it used references to objects that were previously freed. We presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
Affected
19 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | firefox | < firefox 88.0-1 (sid) | firefox 88.0-1 (sid) |
| debian | firefox-esr | < firefox 88.0-1 (sid) | firefox 88.0-1 (sid) |
| debian | thunderbird | < 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 |
| mozilla | firefox_esr | < 78.10 | 78.10 |
| mozilla | firefox_esr | >= unspecified < 78.10 | 78.10 |
| mozilla | thunderbird | < 78.10 | 78.10 |
| mozilla | thunderbird | >= 0 < 1:78.10.0-1 | 1:78.10.0-1 |
| mozilla | thunderbird | >= 0 < 1:78.10.0-1 | 1:78.10.0-1 |
| mozilla | thunderbird | >= 0 < 1:78.10.0-1 | 1:78.10.0-1 |
| mozilla | thunderbird | >= 0 < 1:78.10.0-1 | 1:78.10.0-1 |
| mozilla | thunderbird | >= 0 < 1:78.11.0+build1-0ubuntu0.18.04.2 | 1:78.11.0+build1-0ubuntu0.18.04.2 |
| mozilla | thunderbird | >= 0 < 1:78.11.0+build1-0ubuntu0.20.04.2 | 1:78.11.0+build1-0ubuntu0.20.04.2 |
| mozilla | thunderbird | >= unspecified < 78.10 | 78.10 |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvdv2.05.1MEDIUMAV:N/AC:H/Au:N/C:P/I:P/A:P
osv8.8HIGH
vendor_debian8.8HIGH
vendor_redhat8.8HIGH
vendor_ubuntu8.8HIGH
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Ubuntu
Thunderbird vulnerabilities
vendor_ubuntu·2021-06-25·CVSS 7.4
CVE-2021-29948 [HIGH] Thunderbird vulnerabilities
Title: Thunderbird vulnerabilities
Summary: Several security issues were fixed in Thunderbird.
USN-4995-1 fixed vulnerabilities in Thunderbird. This update provides
the corresponding updates for Ubuntu 18.04 LTS.
Original advisory details:
Multiple security issues were discovered in Thunderbird. If a user were
tricked into opening a specially crafted website in a browsing context, an
attacker could potentially exploit these to cause a denial of service,
obtain sensitive information, spoof the UI, bypass security restrictions,
or execute arbitrary code. (CVE-2021-23961, CVE-2021-23981,
CVE-2021-23982, CVE-2021-23987, CVE-2021-23994, CVE-2021-23998,
CVE-2021-23999, CVE-2021-29945, CVE-2021-29946, CVE-2021-29967)
It was discovered that extensions could open popup windows with control
of
Ubuntu
Thunderbird vulnerabilities
vendor_ubuntu·2021-06-22·CVSS 7.4
CVE-2021-23961 [HIGH] Thunderbird vulnerabilities
Title: Thunderbird vulnerabilities
Summary: Several security issues were fixed in Thunderbird.
Multiple security issues were discovered in Thunderbird. If a user were
tricked into opening a specially crafted website in a browsing context, an
attacker could potentially exploit these to cause a denial of service,
obtain sensitive information, spoof the UI, bypass security restrictions,
or execute arbitrary code. (CVE-2021-23961, CVE-2021-23981,
CVE-2021-23982, CVE-2021-23987, CVE-2021-23994, CVE-2021-23998,
CVE-2021-23999, CVE-2021-29945, CVE-2021-29946, CVE-2021-29967)
It was discovered that extensions could open popup windows with control
of the window title in some circumstances. If a user were tricked into
installing a specially crafted extension, an attacker could potentially
exploit
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,
Red Hat
Mozilla: Use-after-free in Responsive Design Mode
vendor_redhat·2021-04-19·CVSS 8.8
CVE-2021-23995 [HIGH] CWE-416 Mozilla: Use-after-free in Responsive Design Mode
Mozilla: Use-after-free in Responsive Design Mode
When Responsive Design Mode was enabled, it used references to objects that were previously freed. We presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
Package: firefox (Red Hat Enterprise Linux 6) - Out of support scope
Package: thunderbird (Red Hat Enterprise Linux 6) - Out of support scope
Debian
CVE-2021-23995: firefox - When Responsive Design Mode was enabled, it used references to objects that were...
vendor_debian·2021·CVSS 8.8
CVE-2021-23995 [HIGH] CVE-2021-23995: firefox - When Responsive Design Mode was enabled, it used references to objects that were...
When Responsive Design Mode was enabled, it used references to objects that were previously freed. We presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
Scope: local
sid: resolved (fixed in 88.0-1)
Mozilla
Mozilla Foundation Security Advisory 2021-16: CVE-2021-23995
vendor_mozilla·CVSS 8.8
CVE-2021-23995 [HIGH] Mozilla Foundation Security Advisory 2021-16: CVE-2021-23995
Mozilla Foundation Security Advisory 2021-16
CVE: CVE-2021-23995
Product: Firefox
Impact: high
Fixed in: Firefox 88
Mozilla
Mozilla Foundation Security Advisory 2021-14: CVE-2021-23995
vendor_mozilla·CVSS 8.8
CVE-2021-23995 [HIGH] Mozilla Foundation Security Advisory 2021-14: CVE-2021-23995
Mozilla Foundation Security Advisory 2021-14
CVE: CVE-2021-23995
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 78.10
Mozilla
Mozilla Foundation Security Advisory 2021-15: CVE-2021-23995
vendor_mozilla·CVSS 8.8
CVE-2021-23995 [HIGH] Mozilla Foundation Security Advisory 2021-15: CVE-2021-23995
Mozilla Foundation Security Advisory 2021-15
CVE: CVE-2021-23995
Product: Firefox ESR
Impact: low
Fixed in: Firefox ESR 78.10
GHSA
GHSA-h42x-74c2-hxvc: When Responsive Design Mode was enabled, it used references to objects that were previously freed
ghsa_unreviewed·2022-05-24
CVE-2021-23995 [HIGH] CWE-672 GHSA-h42x-74c2-hxvc: When Responsive Design Mode was enabled, it used references to objects that were previously freed
When Responsive Design Mode was enabled, it used references to objects that were previously freed. We presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
OSV
thunderbird vulnerabilities
osv·2021-06-25·CVSS 7.4
[HIGH] thunderbird vulnerabilities
thunderbird vulnerabilities
USN-4995-1 fixed vulnerabilities in Thunderbird. This update provides
the corresponding updates for Ubuntu 18.04 LTS.
Original advisory details:
Multiple security issues were discovered in Thunderbird. If a user were
tricked into opening a specially crafted website in a browsing context, an
attacker could potentially exploit these to cause a denial of service,
obtain sensitive information, spoof the UI, bypass security restrictions,
or execute arbitrary code. (CVE-2021-23961, CVE-2021-23981,
CVE-2021-23982, CVE-2021-23987, CVE-2021-23994, CVE-2021-23998,
CVE-2021-23999, CVE-2021-29945, CVE-2021-29946, CVE-2021-29967)
It was discovered that extensions could open popup windows with control
of the window title in some circumstances. If a user were tricked into
OSV
CVE-2021-23995: When Responsive Design Mode was enabled, it used references to objects that were previously freed
osv·2021-06-24·CVSS 8.8
CVE-2021-23995 [HIGH] CVE-2021-23995: When Responsive Design Mode was enabled, it used references to objects that were previously freed
When Responsive Design Mode was enabled, it used references to objects that were previously freed. We presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
OSV
thunderbird vulnerabilities
osv·2021-06-22·CVSS 7.4
CVE-2021-23961 [HIGH] thunderbird vulnerabilities
thunderbird vulnerabilities
Multiple security issues were discovered in Thunderbird. If a user were
tricked into opening a specially crafted website in a browsing context, an
attacker could potentially exploit these to cause a denial of service,
obtain sensitive information, spoof the UI, bypass security restrictions,
or execute arbitrary code. (CVE-2021-23961, CVE-2021-23981,
CVE-2021-23982, CVE-2021-23987, CVE-2021-23994, CVE-2021-23998,
CVE-2021-23999, CVE-2021-29945, CVE-2021-29946, CVE-2021-29967)
It was discovered that extensions could open popup windows with control
of the window title in some circumstances. If a user were tricked into
installing a specially crafted extension, an attacker could potentially
exploit this to spoof a website and trick the user into providing
credentia
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
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://bugzilla.mozilla.org/show_bug.cgi?id=1699835https://www.mozilla.org/security/advisories/mfsa2021-14/https://www.mozilla.org/security/advisories/mfsa2021-15/https://www.mozilla.org/security/advisories/mfsa2021-16/https://bugzilla.mozilla.org/show_bug.cgi?id=1699835https://www.mozilla.org/security/advisories/mfsa2021-14/https://www.mozilla.org/security/advisories/mfsa2021-15/https://www.mozilla.org/security/advisories/mfsa2021-16/
2021-06-24
Published