CVE-2021-23999
published 2021-06-24CVE-2021-23999: If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges that should…
PriorityP342high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
1.28%
66.4th percentile
If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges that should not be granted to web content. 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
nvdv2.06.8MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P
osv8.8HIGH
vendor_debian8.8HIGH
vendor_redhat8.8HIGH
vendor_ubuntu8.8HIGH
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
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: Blob URLs may have been granted additional privileges
vendor_redhat·2021-04-19·CVSS 8.8
CVE-2021-23999 [HIGH] CWE-281 Mozilla: Blob URLs may have been granted additional privileges
Mozilla: Blob URLs may have been granted additional privileges
If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges that should not be granted to web content. 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-2021-23999: firefox - If a Blob URL was loaded through some unusual user interaction, it could have be...
vendor_debian·2021·CVSS 8.8
CVE-2021-23999 [HIGH] CVE-2021-23999: firefox - If a Blob URL was loaded through some unusual user interaction, it could have be...
If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges that should not be granted to web content. 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 2021-14: CVE-2021-23999
vendor_mozilla·CVSS 8.8
CVE-2021-23999 [HIGH] Mozilla Foundation Security Advisory 2021-14: CVE-2021-23999
Mozilla Foundation Security Advisory 2021-14
CVE: CVE-2021-23999
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 78.10
Mozilla
Mozilla Foundation Security Advisory 2021-16: CVE-2021-23999
vendor_mozilla·CVSS 8.8
CVE-2021-23999 [HIGH] Mozilla Foundation Security Advisory 2021-16: CVE-2021-23999
Mozilla Foundation Security Advisory 2021-16
CVE: CVE-2021-23999
Product: Firefox
Impact: high
Fixed in: Firefox 88
Mozilla
Mozilla Foundation Security Advisory 2021-15: CVE-2021-23999
vendor_mozilla·CVSS 8.8
CVE-2021-23999 [HIGH] Mozilla Foundation Security Advisory 2021-15: CVE-2021-23999
Mozilla Foundation Security Advisory 2021-15
CVE: CVE-2021-23999
Product: Firefox ESR
Impact: low
Fixed in: Firefox ESR 78.10
GHSA
GHSA-f4hx-f2xg-27cv: If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges th
ghsa_unreviewed·2022-05-24
CVE-2021-23999 [HIGH] CWE-269 GHSA-f4hx-f2xg-27cv: If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges th
If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges that should not be granted to web content. 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-2021-23999: If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges th
osv·2021-06-24·CVSS 8.8
CVE-2021-23999 [HIGH] CVE-2021-23999: If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges th
If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges that should not be granted to web content. 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=1691153https://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=1691153https://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