An issue was discovered in gThumb through 3.6.2. There is a double-free vulnerability in the add_themes_from_dir method in dlg-contact-sheet.c because of two successive calls of g_free, each of which frees the same buffer.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2018-18718 from the MITRE CVE dictionary dictionary and NIST NVD.
This issue did not affect the versions of gthumb as shipped with Red Hat Enterprise Linux 5 and 6 as they did not include the vulnerable code.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 3.3 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L |
| Attack Vector | Local |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | Required |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity Impact | None |
| Availability Impact | Low |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 6 | gthumb | Not affected |
| Red Hat Enterprise Linux 5 | gthumb | Not affected |
Vulmon