CVE-2021-38498
Mozilla: Use-after-free of nsLanguageAtomService object
Severity Score
7.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
During process shutdown, a document could have caused a use-after-free of a languages service object, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.2, and Firefox ESR < 91.2.
Durante el cierre del proceso, un documento podría haber causado un uso de memoria previamente liberada de un objeto de servicio de idiomas, conllevando a una corrupción de memoria y un bloqueo potencialmente explotable. Esta vulnerabilidad afecta a Firefox versiones anteriores a 93, Thunderbird versiones anteriores a 91.2 y Firefox ESR versiones anteriores a 91.2
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2021-08-10 CVE Reserved
- 2021-10-11 CVE Published
- 2024-07-19 EPSS Updated
- 2024-08-04 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-416: Use After Free
CAPEC
References (5)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://www.mozilla.org/security/advisories/mfsa2021-43 | 2021-11-04 | |
| https://www.mozilla.org/security/advisories/mfsa2021-45 | 2021-11-04 | |
| https://www.mozilla.org/security/advisories/mfsa2021-47 | 2021-11-04 | |
| https://access.redhat.com/security/cve/CVE-2021-38498 | 2021-10-13 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2011099 | 2021-10-13 |
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" | < 93.0 Search vendor "Mozilla" for product "Firefox" and version " < 93.0" | - |
Affected
| ||||||
| Mozilla Search vendor "Mozilla" | Firefox Esr Search vendor "Mozilla" for product "Firefox Esr" | < 91.2 Search vendor "Mozilla" for product "Firefox Esr" and version " < 91.2" | - |
Affected
| ||||||
| Mozilla Search vendor "Mozilla" | Thunderbird Search vendor "Mozilla" for product "Thunderbird" | < 91.2 Search vendor "Mozilla" for product "Thunderbird" and version " < 91.2" | - |
Affected
| ||||||