A mechanism to bypass file system access protections in the sandbox to use the file picker to access different files than those selected in the file picker through the use of relative paths. This allows for read only access to the local file system. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 52.1, and Firefox < 53.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2017-5454 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 6 (thunderbird) | RHSA-2017:1201 | 2017-05-08 |
| Red Hat Enterprise Linux 7 (firefox) | RHSA-2017:1106 | 2017-04-21 |
| Red Hat Enterprise Linux 7 (thunderbird) | RHSA-2017:1201 | 2017-05-08 |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 6 | firefox | Not affected |
| Red Hat Enterprise Linux 5 | firefox | Will not fix |
| Red Hat Enterprise Linux 5 | thunderbird | Will not fix |
Vulmon