An out-of-bounds write in the Graphite 2 library triggered with a maliciously crafted Graphite font. This results in a potentially exploitable crash. This issue was fixed in the Graphite 2 library as well as Mozilla products. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2017-5436 from the MITRE CVE dictionary dictionary and NIST NVD.
| CVSS3 Base Score | 8.8 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| Attack Vector | Network |
| Attack Complexity | Low |
| 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 6 (firefox) | RHSA-2017:1104 | 2017-04-20 |
| Red Hat Enterprise Linux 7 (thunderbird) | RHSA-2017:1201 | 2017-05-08 |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 5 | firefox | Will not fix |
| Red Hat Enterprise Linux 5 | thunderbird | Will not fix |
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