CVE-2017-16545 — The ReadWPGImage function in coders/wpg

The ReadWPGImage function in coders/wpg.c in GraphicsMagick 1.3.26 does not properly validate colormapped images, which allows remote attackers to cause a denial of service (ImportIndexQuantumType invalid write and application crash) or possibly have unspecified other impact via

01What is this vulnerability?

The ReadWPGImage function in coders/wpg.c in GraphicsMagick 1.3.26 does not properly validate colormapped images, which allows remote attackers to cause a denial of service (ImportIndexQuantumType invalid write and application crash) or possibly have unspecified other impact via a malformed WPG image.

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2017-11-05T22:29:00.167
• Last modified: 2026-05-13T00:24:29.033

09References

• hg.code.sf.net — http://hg.code.sf.net/p/graphicsmagick/code/rev/e8086faa52d0
• lists.debian.org — https://lists.debian.org/debian-lts-announce/2018/08/msg00002.html
• lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…
• lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…
• sourceforge.net — https://sourceforge.net/p/graphicsmagick/bugs/519/
• usn.ubuntu.com — https://usn.ubuntu.com/4248-1/
• www.debian.org — https://www.debian.org/security/2018/dsa-4321
• hg.code.sf.net — http://hg.code.sf.net/p/graphicsmagick/code/rev/e8086faa52d0
• lists.debian.org — https://lists.debian.org/debian-lts-announce/2018/08/msg00002.html
• lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…