CVE-2021-29970
Mozilla: Use-after-free in accessibility features of a document
Severity Score
8.8
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
1
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
A malicious webpage could have triggered a use-after-free, memory corruption, and a potentially exploitable crash. *This bug could only be triggered when accessibility was enabled.*. This vulnerability affects Thunderbird < 78.12, Firefox ESR < 78.12, and Firefox < 90.
Una página web maliciosa podría desencadenar un uso de memoria previamente liberada, una corrupción de memoria y un bloqueo potencialmente explotable. *Este bug sólo podía ser desencadenado cuando la accesibilidad estaba activada. Esta vulnerabilidad afecta a Thunderbird versiones anteriores a 78.12, Firefox ESR versiones anteriores a 78.12 y Firefox versiones anteriores a 90
*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
- 2021-04-01 CVE Reserved
- 2021-07-15 CVE Published
- 2024-04-20 EPSS Updated
- 2024-08-03 CVE Updated
- 2024-08-03 First Exploit
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-416: Use After Free
- CWE-787: Out-of-bounds Write
CAPEC
References (8)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1709976 | 2024-08-03 |
| 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.mozilla.org/security/advisories/mfsa2021-28 | 2022-12-09 | |
| https://www.mozilla.org/security/advisories/mfsa2021-29 | 2022-12-09 | |
| https://www.mozilla.org/security/advisories/mfsa2021-30 | 2022-12-09 | |
| https://access.redhat.com/security/cve/CVE-2021-29970 | 2021-07-27 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1982013 | 2021-07-27 |
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" | < 90.0 Search vendor "Mozilla" for product "Firefox" and version " < 90.0" | - |
Affected
| ||||||
| Mozilla Search vendor "Mozilla" | Firefox Esr Search vendor "Mozilla" for product "Firefox Esr" | < 78.12 Search vendor "Mozilla" for product "Firefox Esr" and version " < 78.12" | - |
Affected
| ||||||
| Mozilla Search vendor "Mozilla" | Thunderbird Search vendor "Mozilla" for product "Thunderbird" | < 78.12 Search vendor "Mozilla" for product "Thunderbird" and version " < 78.12" | - |
Affected
| ||||||