A use-after-free vulnerability can occur when script uses mutation events to move DOM nodes between documents, resulting in the old document that held the node being freed but the node still having a pointer referencing it. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60, Thunderbird < 52.9, Firefox ESR < 60.1, Firefox ESR < 52.9, and Firefox < 61.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2018-12363 from the MITRE CVE dictionary dictionary and NIST NVD.
| CVSS3 Base Score | 7.5 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
| Attack Vector | Network |
| Attack Complexity | High |
| Privileges Required | None |
| User Interaction | Required |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity Impact | High |
| Availability Impact | High |
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Enterprise Linux 7 (firefox) | RHSA-2018:2113 | 2018-06-28 |
| Red Hat Enterprise Linux 7 (thunderbird) | RHSA-2018:2252 | 2018-07-24 |
| Red Hat Enterprise Linux 6 (thunderbird) | RHSA-2018:2251 | 2018-07-24 |
| Red Hat Enterprise Linux 6 (firefox) | RHSA-2018:2112 | 2018-06-28 |
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