| Release Date: | 2021-11-03 | |
| Impact: | None | What is this? |
During operations on MessageTasks, a task may have been removed while it was still scheduled, resulting in memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.15, Thunderbird < 91.2, Firefox ESR < 91.2, Firefox ESR < 78.15, and Firefox < 93.
See more information about CVE-2021-38496 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS metrics and score provided are preliminary and subject to review.
| Base Score: | 8.8 |
| Vector String: | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| Version: | 3.0 |
| Attack Vector: | Network |
| Attack Complexity: | Low |
| Privileges Required: | None |
| User Interaction: | Required |
| Scope: | Unchanged |
| Confidentiality Impact: | High |
| Integrity Impact: | High |
| Availability Impact: | High |
| Platform | Errata | Release Date |
| Oracle Linux version 7 (firefox) | ELSA-2021-3791 | 2021-10-25 |
| Oracle Linux version 7 (thunderbird) | ELSA-2021-3841 | 2021-10-25 |
| Oracle Linux version 8 (firefox) | ELSA-2021-3755 | 2021-10-11 |
| Oracle Linux version 8 (thunderbird) | ELSA-2021-3838 | 2021-10-15 |
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