CVE-2017-7962 — The iwgif_read_image function in imagew-gif
The iwgif_read_image function in imagew-gif.c in libimageworsener.a in ImageWorsener 1.3.0 allows remote attackers to cause a denial of service (divide-by-zero error and application crash) via a crafted file.
Published
2017-04-19T15:59:00.240
Last modified
2026-05-13T00:24:29.033
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
01What is this vulnerability?
The iwgif_read_image function in imagew-gif.c in libimageworsener.a in ImageWorsener 1.3.0 allows remote attackers to cause a denial of service (divide-by-zero error and application crash) via a crafted file.
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: 2017-04-19T15:59:00.240
- Last modified: 2026-05-13T00:24:29.033
09References
- blogs.gentoo.org — https://blogs.gentoo.org/ago/2017/04/17/imageworsener-divide-by-zero-in-iwgif_re…
- github.com — https://github.com/jsummers/imageworsener/commit/ca3356eb49fee03e2eaf6b6aff82698…
- github.com — https://github.com/jsummers/imageworsener/issues/15
- security.gentoo.org — https://security.gentoo.org/glsa/201706-06
- blogs.gentoo.org — https://blogs.gentoo.org/ago/2017/04/17/imageworsener-divide-by-zero-in-iwgif_re…
- github.com — https://github.com/jsummers/imageworsener/commit/ca3356eb49fee03e2eaf6b6aff82698…
- github.com — https://github.com/jsummers/imageworsener/issues/15
- security.gentoo.org — https://security.gentoo.org/glsa/201706-06
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