CVE-2018-7731 Null dereference in n/a

What is CVE-2018-7731?

CVE-2018-7731 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 6 Mar 2018. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

An issue was discovered in Exempi through 2.4.4. XMPFiles/source/FormatSupport/WEBP_Support.cpp does not check whether a bitstream has a NULL value, leading to a NULL pointer dereference in the WEBP::VP8XChunk class.

Weakness: CWE-476

Which versions are affected by CVE-2018-7731?

It affects 2 products.

Products include Canonical Ubuntu Linux, Exempi Project Exempi.

How do I fix CVE-2018-7731?

Upgrade to a fixed version.

Is CVE-2018-7731 being exploited?

There is no known exploitation of CVE-2018-7731 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2018-7731, GHSA-w7rp-6q39-g7qw.