The GD Graphics Library (aka LibGD) 2.2.5 has a double free in the gdImage*Ptr() functions in gd_gif_out.c, gd_jpeg.c, and gd_wbmp.c. NOTE: PHP is unaffected.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2019-6978 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 | 5.3 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity Impact | None |
| Availability Impact | Low |
| 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-php71-php | Not affected |
| Red Hat OpenShift Enterprise 3 | gd | Under investigation |
| Red Hat Enterprise Linux 7 | php | Not affected |
| Red Hat Enterprise Linux 7 | gd | Under investigation |
| Red Hat Enterprise Linux 7 | libwmf | Under investigation |
| Red Hat Enterprise Linux 6 | libwmf | Under investigation |
| Red Hat Enterprise Linux 6 | gd | Under investigation |
| Red Hat Enterprise Linux 6 | php | Not affected |
| Red Hat Enterprise Linux 5 | gd | Under investigation |
| Red Hat Enterprise Linux 5 | php53 | Not affected |
| Red Hat Enterprise Linux 5 | libwmf | Under investigation |
| Red Hat Enterprise Linux 5 | php | Not affected |
Vulmon