Double free vulnerability in the gdImageWebPtr function in the GD Graphics Library (aka libgd) before 2.2.4 allows remote attackers to have unspecified impact via large width and height values.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2016-6912 from the MITRE CVE dictionary dictionary and NIST NVD.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 8.1 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Attack Vector | Network |
| Attack Complexity | High |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity Impact | High |
| Availability Impact | High |
| Platform | Package | State |
|---|---|---|
| Red Hat Software Collections for Red Hat Enterprise Linux | rh-php70-php | Not affected |
| Red Hat Software Collections for Red Hat Enterprise Linux | rh-php56-php | Not affected |
| Red Hat OpenShift Enterprise 2 | php | Not affected |
| Red Hat OpenShift Enterprise 2 | gd | Not affected |
| Red Hat Enterprise Linux 7 | php | Not affected |
| Red Hat Enterprise Linux 7 | libwmf | Not affected |
| Red Hat Enterprise Linux 7 | gd | Not affected |
| Red Hat Enterprise Linux 6 | libwmf | Not affected |
| Red Hat Enterprise Linux 6 | gd | Not affected |
| Red Hat Enterprise Linux 6 | php | Not affected |
| Red Hat Enterprise Linux 5 | gd | Not affected |
| Red Hat Enterprise Linux 5 | php53 | Not affected |
| Red Hat Enterprise Linux 5 | libwmf | Not affected |
| Red Hat Enterprise Linux 5 | php | Not affected |
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