CVE-2021-29988
Mozilla: Memory corruption as a result of incorrect style treatment
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
Firefox incorrectly treated an inline list-item element as a block element, resulting in an out of bounds read or memory corruption, and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91.
Firefox trataba incorrectamente un elemento de lista en línea como un elemento de bloqueo, resultando en una lectura fuera de límites o una corrupción de la memoria, y un bloqueo potencialmente explotable. Esta vulnerabilidad afecta a Thunderbird versiones anteriores a 78.13, Thunderbird versiones anteriores a 91, Firefox ESR versiones anteriores a 78.13 y Firefox versiones anteriores a 91.
*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
- 2021-08-16 CVE Published
- 2024-05-02 EPSS Updated
- 2024-08-03 CVE Updated
- 2024-08-03 First Exploit
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
- CWE-125: Out-of-bounds Read
- CWE-787: Out-of-bounds Write
CAPEC
References (9)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1717922 | 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/mfsa2021-33 | 2022-12-09 | |
| https://www.mozilla.org/security/advisories/mfsa2021-34 | 2022-12-09 | |
| https://www.mozilla.org/security/advisories/mfsa2021-35 | 2022-12-09 | |
| https://www.mozilla.org/security/advisories/mfsa2021-36 | 2022-12-09 | |
| https://access.redhat.com/security/cve/CVE-2021-29988 | 2021-08-16 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1992419 | 2021-08-16 |
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" | < 91.0 Search vendor "Mozilla" for product "Firefox" and version " < 91.0" | - |
Affected
| ||||||
| Mozilla Search vendor "Mozilla" | Firefox Esr Search vendor "Mozilla" for product "Firefox Esr" | < 78.13.0 Search vendor "Mozilla" for product "Firefox Esr" and version " < 78.13.0" | - |
Affected
| ||||||
| Mozilla Search vendor "Mozilla" | Thunderbird Search vendor "Mozilla" for product "Thunderbird" | < 78.13.0 Search vendor "Mozilla" for product "Thunderbird" and version " < 78.13.0" | - |
Affected
| ||||||