The nsScannerString::AppendUnicodeTo function in Mozilla Firefox before 45.0 and Firefox ESR 38.x before 38.7 does not verify that memory allocation succeeds, which allows remote attackers to execute arbitrary code or cause a denial of service (out-of-bounds read) via crafted Unicode data in an HTML, XML, or SVG document.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2016-1974 from the MITRE CVE dictionary dictionary and NIST NVD.
| Base Score | 5.1 |
|---|---|
| Base Metrics | AV:N/AC:H/Au:N/C:P/I:P/A:P |
| Access Vector | Network |
| Access Complexity | High |
| Authentication | None |
| Confidentiality Impact | Partial |
| Integrity Impact | Partial |
| Availability Impact | Partial |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Enterprise Linux 5 (thunderbird) | RHSA-2016:0460 | 2016-03-16 |
| Red Hat Enterprise Linux 6 (thunderbird) | RHSA-2016:0460 | 2016-03-16 |
| Red Hat Enterprise Linux 7 (thunderbird) | RHSA-2016:0460 | 2016-03-16 |
| Red Hat Enterprise Linux 5 (firefox) | RHSA-2016:0373 | 2016-03-09 |
| Red Hat Enterprise Linux 7 (firefox) | RHSA-2016:0373 | 2016-03-09 |
| Red Hat Enterprise Linux 6 (firefox) | RHSA-2016:0373 | 2016-03-09 |
| Red Hat Enterprise Linux Optional Productivity Applications (v. 5 server) (thunderbird) | RHSA-2016:0460 | 2016-03-16 |
Vulmon