CVE-2017-8326 — libimageworsener

libimageworsener.a in ImageWorsener before 1.3.1 has "left shift cannot be represented in type int" undefined behavior issues, which might allow remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted ima

01What is this vulnerability?

libimageworsener.a in ImageWorsener before 1.3.1 has "left shift cannot be represented in type int" undefined behavior issues, which might allow remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted image, related to imagew-bmp.c and imagew-util.c.

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: 2017-04-29T20:59:00.227
• Last modified: 2026-05-13T00:24:29.033

09References

• blogs.gentoo.org — https://blogs.gentoo.org/ago/2017/04/27/imageworsener-two-left-shift/
• github.com — https://github.com/jsummers/imageworsener/commit/a00183107d4b84bc8a714290e824ca9…
• security.gentoo.org — https://security.gentoo.org/glsa/201706-06
• blogs.gentoo.org — https://blogs.gentoo.org/ago/2017/04/27/imageworsener-two-left-shift/
• github.com — https://github.com/jsummers/imageworsener/commit/a00183107d4b84bc8a714290e824ca9…
• security.gentoo.org — https://security.gentoo.org/glsa/201706-06