CVE-2021-38503
published 2021-12-08CVE-2021-38503: The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or navigating the…
PriorityP355critical10CVSS 3.1
AVNACLPRNUINSCCHIHAH
EPSS
3.83%
88.8th percentile
The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or navigating the top-level frame. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.
Affected
21 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | firefox | < firefox 94.0-1 (sid) | firefox 94.0-1 (sid) |
| debian | firefox-esr | < firefox 94.0-1 (sid) | firefox 94.0-1 (sid) |
| debian | thunderbird | < firefox 94.0-1 (sid) | firefox 94.0-1 (sid) |
| mozilla | firefox | < 94.0 | 94.0 |
| mozilla | firefox | — | — |
| mozilla | firefox | >= 0 < 94.0+build3-0ubuntu0.18.04.1 | 94.0+build3-0ubuntu0.18.04.1 |
| mozilla | firefox | >= 0 < 94.0+build3-0ubuntu0.20.04.1 | 94.0+build3-0ubuntu0.20.04.1 |
| mozilla | firefox | >= unspecified < 94 | 94 |
| mozilla | firefox_esr | < 91.3 | 91.3 |
| mozilla | firefox_esr | >= unspecified < 91.3 | 91.3 |
| mozilla | thunderbird | < 91.3 | 91.3 |
| mozilla | thunderbird | >= 0 < 1:91.4.1-1~deb11u1 | 1:91.4.1-1~deb11u1 |
| mozilla | thunderbird | >= 0 < 1:91.3.0-1 | 1:91.3.0-1 |
| mozilla | thunderbird | >= 0 < 1:91.3.0-1 | 1:91.3.0-1 |
| mozilla | thunderbird | >= 0 < 1:91.3.0-1 | 1:91.3.0-1 |
| mozilla | thunderbird | >= 0 < 1:91.5.0+build1-0ubuntu0.18.04.1 | 1:91.5.0+build1-0ubuntu0.18.04.1 |
| mozilla | thunderbird | >= 0 < 1:91.5.0+build1-0ubuntu0.20.04.1 | 1:91.5.0+build1-0ubuntu0.20.04.1 |
| mozilla | thunderbird | >= unspecified < 91.3 | 91.3 |
CVSS provenance
nvdv3.110.0CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
nvdv2.07.5HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
osv10.0CRITICAL
vendor_debian10.0CRITICAL
vendor_redhat10.0CRITICAL
vendor_ubuntu10.0CRITICAL
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Ubuntu
Thunderbird vulnerabilities
vendor_ubuntu·2022-01-21·CVSS 8.8
CVE-2022-22742 [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, trick a user into accepting unwanted
permissions, conduct header splitting attacks, conduct spoofing attacks,
bypass security restrictions, confuse the user, or execute arbitrary code.
(CVE-2021-4129, CVE-2021-4140, CVE-2021-29981, CVE-2021-29982,
CVE-2021-29987, CVE-2021-29991, CVE-2021-38495, CVE-2021-38496,
CVE-2021-38497, CVE-2021-38498, CVE-2021-38500, CVE-2021-38501,
CVE-2021-38503, CVE-2021-38504, CVE-2021-38506, CVE-2021-38507,
CVE-2021-38508,
Ubuntu
Thunderbird vulnerabilities
vendor_ubuntu·2021-11-18
CVE-2021-38503 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,
bypass security restrictions, spoof the UI, confuse the user, conduct
phishing attacks, or execute arbitrary code.
Instructions: After a standard system update you need to restart Thunderbird to make
all the necessary changes.
Ubuntu
Firefox vulnerabilities
vendor_ubuntu·2021-11-03·CVSS 10.0
CVE-2021-38507 [CRITICAL] 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, bypass security
restrictions, spoof the browser UI, confuse the user, conduct phishing
attacks, or execute arbitrary code. (CVE-2021-38503, CVE-2021-38504,
CVE-2021-38506, CVE-2021-38507, CVE-2021-38508, CVE-2021-38509)
It was discovered that the 'Copy Image Link' context menu action
would copy the final image URL after redirects. If a user were tricked
into copying and pasting a link for an embedded image that triggered
authentication flows back to the page, an att
Red Hat
Mozilla: iframe sandbox rules did not apply to XSLT stylesheets
vendor_redhat·2021-11-02·CVSS 10.0
CVE-2021-38503 [CRITICAL] CWE-732 Mozilla: iframe sandbox rules did not apply to XSLT stylesheets
Mozilla: iframe sandbox rules did not apply to XSLT stylesheets
The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or navigating the top-level frame. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.
The Mozilla Foundation Security Advisory describes this flaw as:
The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or navigating the top-level frame.
Package: firefox (Red Hat Enterprise Linux 6) - Out of support scope
Package: thunderbird (Red Hat Enterprise Linux 6) - Out of support scope
Debian
CVE-2021-38503: firefox - The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowin...
vendor_debian·2021·CVSS 10.0
CVE-2021-38503 [CRITICAL] CVE-2021-38503: firefox - The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowin...
The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or navigating the top-level frame. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.
Scope: local
sid: resolved (fixed in 94.0-1)
Mozilla
Mozilla Foundation Security Advisory 2021-48: CVE-2021-38503
vendor_mozilla·CVSS 10.0
CVE-2021-38503 [CRITICAL] Mozilla Foundation Security Advisory 2021-48: CVE-2021-38503
Mozilla Foundation Security Advisory 2021-48
CVE: CVE-2021-38503
Product: Firefox
Impact: high
Fixed in: Firefox 94
Mozilla
Mozilla Foundation Security Advisory 2021-50: CVE-2021-38503
vendor_mozilla·CVSS 10.0
CVE-2021-38503 [CRITICAL] Mozilla Foundation Security Advisory 2021-50: CVE-2021-38503
Mozilla Foundation Security Advisory 2021-50
CVE: CVE-2021-38503
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 91.3
Mozilla
Mozilla Foundation Security Advisory 2021-49: CVE-2021-38503
vendor_mozilla·CVSS 10.0
CVE-2021-38503 [CRITICAL] Mozilla Foundation Security Advisory 2021-49: CVE-2021-38503
Mozilla Foundation Security Advisory 2021-49
CVE: CVE-2021-38503
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 91.3
OSV
thunderbird vulnerabilities
osv·2022-01-21·CVSS 8.8
CVE-2021-4129 [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, trick a user into accepting unwanted
permissions, conduct header splitting attacks, conduct spoofing attacks,
bypass security restrictions, confuse the user, or execute arbitrary code.
(CVE-2021-4129, CVE-2021-4140, CVE-2021-29981, CVE-2021-29982,
CVE-2021-29987, CVE-2021-29991, CVE-2021-38495, CVE-2021-38496,
CVE-2021-38497, CVE-2021-38498, CVE-2021-38500, CVE-2021-38501,
CVE-2021-38503, CVE-2021-38504, CVE-2021-38506, CVE-2021-38507,
CVE-2021-38508, CVE-2021-38509, CVE-2021-43534, CVE-2021-43535,
CVE-2021-43536, CVE
GHSA
GHSA-6g99-7xcp-vcw9: The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or naviga
ghsa_unreviewed·2021-12-09
CVE-2021-38503 [CRITICAL] CWE-863 GHSA-6g99-7xcp-vcw9: The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or naviga
The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or navigating the top-level frame. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.
OSV
CVE-2021-38503: The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or naviga
osv·2021-12-08·CVSS 10.0
CVE-2021-38503 [CRITICAL] CVE-2021-38503: The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or naviga
The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or navigating the top-level frame. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.
OSV
firefox vulnerabilities
osv·2021-11-03·CVSS 10.0
CVE-2021-38503 [CRITICAL] 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, bypass security
restrictions, spoof the browser UI, confuse the user, conduct phishing
attacks, or execute arbitrary code. (CVE-2021-38503, CVE-2021-38504,
CVE-2021-38506, CVE-2021-38507, CVE-2021-38508, CVE-2021-38509)
It was discovered that the 'Copy Image Link' context menu action
would copy the final image URL after redirects. If a user were tricked
into copying and pasting a link for an embedded image that triggered
authentication flows back to the page, an attacker could potentially
exploit this to steal authentication tokens.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://bugzilla.mozilla.org/show_bug.cgi?id=1729517https://lists.debian.org/debian-lts-announce/2021/12/msg00030.htmlhttps://lists.debian.org/debian-lts-announce/2022/01/msg00001.htmlhttps://security.gentoo.org/glsa/202202-03https://security.gentoo.org/glsa/202208-14https://www.debian.org/security/2021/dsa-5026https://www.debian.org/security/2022/dsa-5034https://www.mozilla.org/security/advisories/mfsa2021-48/https://www.mozilla.org/security/advisories/mfsa2021-49/https://www.mozilla.org/security/advisories/mfsa2021-50/https://bugzilla.mozilla.org/show_bug.cgi?id=1729517https://lists.debian.org/debian-lts-announce/2021/12/msg00030.htmlhttps://lists.debian.org/debian-lts-announce/2022/01/msg00001.htmlhttps://security.gentoo.org/glsa/202202-03https://security.gentoo.org/glsa/202208-14https://www.debian.org/security/2021/dsa-5026https://www.debian.org/security/2022/dsa-5034https://www.mozilla.org/security/advisories/mfsa2021-48/https://www.mozilla.org/security/advisories/mfsa2021-49/https://www.mozilla.org/security/advisories/mfsa2021-50/
2021-12-08
Published