What’s Vulnerable › Vulnerabilities

CVE-2018-6799

• Severity: high (CVSS 8.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-02-07 · updated 2026-06-17
• Weakness: CWE-119

Description

The AcquireCacheNexus function in magick/pixel_cache.c in GraphicsMagick before 1.3.28 allows remote attackers to cause a denial of service (heap overwrite) or possibly have unspecified other impact via a crafted image file, because a pixel staging area is not used.

Affected products

• Debian Linux: 7.0, 8.0, 9.0
• GraphicsMagick: before 1.3.28 — fixed in 1.3.28

How to fix

Upgrade to a fixed version: GraphicsMagick 1.3.28. Check the vendor advisory for mitigations.

References

• http://hg.graphicsmagick.org/hg/GraphicsMagick/rev/b41e2efce6d3
• http://www.securityfocus.com/bid/102981
• https://lists.debian.org/debian-lts-announce/2018/02/msg00017.html
• https://lists.debian.org/debian-lts-announce/2018/08/msg00002.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PF62B5PJA2JDUOCKJGUQO3SPL74BEYSV/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WHIKB4TP6KBJWT2UIPWL5MWMG5QXKGEJ/
• https://www.debian.org/security/2018/dsa-4321
• http://hg.graphicsmagick.org/hg/GraphicsMagick/rev/b41e2efce6d3
• http://www.securityfocus.com/bid/102981
• https://lists.debian.org/debian-lts-announce/2018/02/msg00017.html
• https://lists.debian.org/debian-lts-announce/2018/08/msg00002.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PF62B5PJA2JDUOCKJGUQO3SPL74BEYSV/

Get alerted when CVE-2018-6799 or the next vulnerability affects your stack