CVE-2018-18718 - Double Free

Severity

46%

Complexity

39%

Confidentiality

106%

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.

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.

CVSS 3.0 Base Score 7.8. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

CVSS 2.0 Base Score 4.6. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (AV:L/AC:L/Au:N/C:P/I:P/A:P).

Demo Examples

Double Free

CWE-415

Double Free

CWE-415

While contrived, this code should be exploitable on Linux distributions which do not ship with heap-chunk check summing turned on.


               
}
free(buf1R2);

Overview

First reported 6 years ago

2018-10-29 12:29:00

Last updated 6 years ago

2018-12-07 20:29:00

Affected Software

Debian Linux 8.0 (Jessie)

8.0

References

https://gitlab.gnome.org/GNOME/gthumb/issues/18

Patch, Third Party Advisory

[debian-lts-announce] 20181105 [SECURITY] [DLA 1567-1] gthumb security update

Third Party Advisory

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