Hashed codes of JavaScript objects are shared between pages. This allows for pointer leaks because an object's address can be discovered through hash codes, and also allows for data leakage of an object's content using these hash codes. This vulnerability affects Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox < 51.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2017-5378 from the MITRE CVE dictionary dictionary and NIST NVD.
| Base Score | 4.3 |
|---|---|
| Base Metrics | AV:N/AC:M/Au:N/C:P/I:N/A:N |
| Access Vector | Network |
| Access Complexity | Medium |
| Authentication | None |
| Confidentiality Impact | Partial |
| Integrity Impact | None |
| Availability Impact | None |
| CVSS3 Base Score | 5.3 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | Low |
| Integrity Impact | None |
| Availability Impact | None |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Enterprise Linux 7 (thunderbird) | RHSA-2017:0238 | 2017-02-02 |
| Red Hat Enterprise Linux 5 (firefox) | RHSA-2017:0190 | 2017-01-25 |
| Red Hat Enterprise Linux 7 (firefox) | RHSA-2017:0190 | 2017-01-25 |
| Red Hat Enterprise Linux Optional Productivity Applications (v. 5 server) (thunderbird) | RHSA-2017:0238 | 2017-02-02 |
| Red Hat Enterprise Linux 5 (thunderbird) | RHSA-2017:0238 | 2017-02-02 |
| Red Hat Enterprise Linux 6 (thunderbird) | RHSA-2017:0238 | 2017-02-02 |
| Red Hat Enterprise Linux 6 (firefox) | RHSA-2017:0190 | 2017-01-25 |
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