[USN-5680-1] gThumb vulnerabilities

[Fabian Toepfer]

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Ubuntu Security Notice USN-5680-1
October 14, 2022

gThumb vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in gThumb.

Software Description:
- gthumb: image viewer and browser

Details:

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)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 20.04 LTS:
gthumb 3:3.8.0-2.1ubuntu0.1
gthumb-data 3:3.8.0-2.1ubuntu0.1

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-5680-1
CVE-2019-20326, CVE-2020-36427

Package Information:
https://launchpad.net/ubuntu/+source/gthumb/3:3.8.0-2.1ubuntu0.1
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