What’s Vulnerable › Vulnerabilities

CVE-2018-7731

• Severity: medium (CVSS 5.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-03-06 · updated 2026-06-17
• Weakness: CWE-476

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.

Affected products

• Canonical Ubuntu Linux: 14.04, 16.04, 17.10
• Exempi Project Exempi: through 2.4.4

References

• https://bugs.freedesktop.org/show_bug.cgi?id=105247
• https://cgit.freedesktop.org/exempi/commit/?id=aabedb5e749dd59112a3fe1e8e08f2d934f56666
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BCFXKOOATZ2B5G3G7EBXZWVZHEABN4ZV/
• https://usn.ubuntu.com/3668-1/
• https://bugs.freedesktop.org/show_bug.cgi?id=105247
• https://cgit.freedesktop.org/exempi/commit/?id=aabedb5e749dd59112a3fe1e8e08f2d934f56666
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BCFXKOOATZ2B5G3G7EBXZWVZHEABN4ZV/
• https://usn.ubuntu.com/3668-1/

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