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CVE-2018-18718

An issue was discovered in gThumb through 3.6.2. There is a double-free vulnerability in the...

7.8 HighFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

0.41%Down 0.2 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 7.8

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.

Record
CVE-2018-18718
CVSS 3.0
7.8 HighCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
4.6 MediumAV:L/AC:L/Au:N/C:P/I:P/A:P
Weakness
CWE-415
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2018-18718
Updated
2026-11-02
EUVDEUVD-2018-10434 No score

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.

Record
EUVD-2018-10434
Updated
2026-11-03
GitHub AdvisoriesGHSA-rr89-xjwm-mp65 7.8

An issue was discovered in gThumb through 3.6.2. There is a double-free vulnerability in the...

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.

Record
GHSA-rr89-xjwm-mp65
CVSS 3.0
7.8 HighCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-415
Updated
2026-11-02
OSV 7.8

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.

Record
CVE-2018-18718
CVSS 3.0
7.8 HighCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2018-18718 7.8

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.

Record
DEBIAN-CVE-2018-18718
CVSS 3.0
7.8 HighCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
Show 5 moreShow less
OSVUBUNTU-CVE-2018-18718 7.8

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.

Record
UBUNTU-CVE-2018-18718
CVSS 3.0
7.8 HighCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVMGASA-2019-0039 No score

Updated gthumb packages fix security vulnerability

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. (CVE-2018-18718)

Record
MGASA-2019-0039
Updated
2026-11-02
OSVopenSUSE-SU-2019:0022-1 No score

Security update for gthumb

This update for gthumb fixes the following issues:

Security issue fixed:

  • CVE-2018-18718: Fixed a double-free in add_themes_from_dir function from dlg-contact-sheet.c (boo#1113749)
Record
openSUSE-SU-2019:0022-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:10832-1 No score

gthumb-3.12.0-3.1 on GA media

These are all security issues fixed in the gthumb-3.12.0-3.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10832-1
Updated
2026-11-02
OSVUSN-5681-1 No score

gThumb vulnerabilities

It was discovered that gThumb did not properly managed memory under certain circumstances. An attacker could possibly use this issue to cause gThumb to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2018-18718)

It was discovered that gThumb did not properly managed memory when processing certain image files. If a user were tricked into opening a specially crafted JPEG file, an attacker could possibly use this issue to cause gThumb to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2019-20326)

It was discovered that gThumb did not properly handled certain malformed image files. If a user were tricked into opening a specially crafted JPEG file, an attacker could possibly use this issue to cause gThumb to crash, resulting in a denial of service. (CVE-2020-36427)

Record
USN-5681-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
gthumb
Debian:12
 before 3:3.6.2-2
3:3.6.2-2
gthumb
Debian:13
 before 3:3.6.2-2
3:3.6.2-2
gthumb
Debian:14
 before 3:3.6.2-2
3:3.6.2-2
gthumb
Debian:8
 before 3:3.3.1-2.1+deb8u1, plus listed versions
3:3.3.1-2
3:3.3.1-2.1+deb8u1
gthumb
Mageia:6
 before 3.4.5-2.1.mga6
3.4.5-2.1.mga6
gthumb
Ubuntu:Pro:16.04:LTS
 before 3:3.4.3-1ubuntu0.1~esm1, plus listed versions
3:3.3.1.is.3.2.8-0ubuntu33:3.4.1-23:3.4.1-33:3.4.1-43:3.4.3-1
3:3.4.3-1ubuntu0.1~esm1
gthumb
Ubuntu:Pro:18.04:LTS
 before 3:3.6.1-1ubuntu0.1~esm1, plus listed versions
3:3.5.2-2ubuntu13:3.5.3-13:3.5.4-13:3.6.0-13:3.6.0-23:3.6.0-33:3.6.0-43:3.6.1-1
3:3.6.1-1ubuntu0.1~esm1
gthumb
Ubuntu:Pro:16.04:LTS
From an advisory covering 3 CVEs
 before 3:3.4.3-1ubuntu0.1~esm1, plus listed versions
3:3.3.1.is.3.2.8-0ubuntu33:3.4.1-23:3.4.1-33:3.4.1-43:3.4.3-1
3:3.4.3-1ubuntu0.1~esm1
gthumb
Ubuntu:Pro:18.04:LTS
From an advisory covering 3 CVEs
 before 3:3.6.1-1ubuntu0.1~esm1, plus listed versions
3:3.5.2-2ubuntu13:3.5.3-13:3.5.4-13:3.6.0-13:3.6.0-23:3.6.0-33:3.6.0-43:3.6.1-1
3:3.6.1-1ubuntu0.1~esm1
gthumb
SUSE:Package Hub 15
 before 3.6.1-bp150.2.3.1
3.6.1-bp150.2.3.1
gthumb
openSUSE:Leap 15.0
 before 3.6.1-bp150.2.3.1
3.6.1-bp150.2.3.1
gthumb
openSUSE:Tumbleweed
 before 3.12.0-3.1
3.12.0-3.1

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-18718 is a high vulnerability (CVSS 7.8) in Gnome Gthumb, published October 28, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.41%, the 35th percentile. Fixed in gthumb 3:3.6.2-2.

References

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