CVE-2021-38503
Mozilla: iframe sandbox rules did not apply to XSLT stylesheets
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
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.
Las reglas del sandbox de iframe no se aplicaban correctamente a las hojas de estilo XSLT, permitiendo a un iframe omitir restricciones como la ejecución de scripts o la navegación por el marco de nivel superior. Esta vulnerabilidad afecta a Firefox versiones anteriores a 94, Thunderbird versiones anteriores a 91.3 y Firefox ESR versiones anteriores a 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.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2021-08-10 CVE Reserved
- 2021-11-03 CVE Published
- 2024-08-04 CVE Updated
- 2024-08-23 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-732: Incorrect Permission Assignment for Critical Resource
- CWE-863: Incorrect Authorization
CAPEC
References (11)
| URL | Tag | Source |
|---|---|---|
| https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html | Mailing List |
|
| https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html | Mailing List |
|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://security.gentoo.org/glsa/202202-03 | 2022-12-09 | |
| https://security.gentoo.org/glsa/202208-14 | 2022-12-09 | |
| https://www.debian.org/security/2021/dsa-5026 | 2022-12-09 | |
| https://www.debian.org/security/2022/dsa-5034 | 2022-12-09 | |
| https://www.mozilla.org/security/advisories/mfsa2021-48 | 2022-12-09 | |
| https://www.mozilla.org/security/advisories/mfsa2021-49 | 2022-12-09 | |
| https://www.mozilla.org/security/advisories/mfsa2021-50 | 2022-12-09 | |
| https://access.redhat.com/security/cve/CVE-2021-38503 | 2021-11-10 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2019621 | 2021-11-10 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Mozilla Search vendor "Mozilla" | Firefox Search vendor "Mozilla" for product "Firefox" | < 94.0 Search vendor "Mozilla" for product "Firefox" and version " < 94.0" | - |
Affected
| ||||||
| Mozilla Search vendor "Mozilla" | Firefox Esr Search vendor "Mozilla" for product "Firefox Esr" | < 91.3 Search vendor "Mozilla" for product "Firefox Esr" and version " < 91.3" | - |
Affected
| ||||||
| Mozilla Search vendor "Mozilla" | Thunderbird Search vendor "Mozilla" for product "Thunderbird" | < 91.3 Search vendor "Mozilla" for product "Thunderbird" and version " < 91.3" | - |
Affected
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| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0" | - |
Affected
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| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0" | - |
Affected
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| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 11.0 Search vendor "Debian" for product "Debian Linux" and version "11.0" | - |
Affected
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