CVE-2018-18718 Use after free in n/a
A double-free vulnerability in gThumb allows attackers to cause a denial of service or potentially execute arbitrary code via crafted image files.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2018-18718?
CVE-2018-18718 is a high-severity use after free vulnerability in Debian Debian Linux, published on 28 Oct 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Weakness: CWE-415
Which versions are affected by CVE-2018-18718?
It affects 2 products.
Linux distribution packages (3)
gthumb SUSE:Package Hub 15 | All versions | 3.6.1-bp150.2.3.1 |
gthumb openSUSE:Leap 15.0 | All versions | 3.6.1-bp150.2.3.1 |
gthumb openSUSE:Tumbleweed | All versions | 3.12.0-3.1 |
Products include Debian Debian Linux, Gnome Gthumb.
How do I fix CVE-2018-18718?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2018-18718 being exploited?
There is no known exploitation of CVE-2018-18718 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2018-18718, DLA-1567-1, GHSA-rr89-xjwm-mp65, MGASA-2019-0039, UBUNTU-CVE-2018-18718, openSUSE-SU-2019:0022-1 and 1 more.