What’s Vulnerable › Vulnerabilities
CVE-2023-3316: A NULL pointer dereference in TIFFClose() is caused by a failure to open an output file (non-existent path or a path that requires permissions like /dev/null) while specifying zones.
- Severity: medium (CVSS 6.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.1% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2023-06-19 · updated 2026-06-17
- Weakness: CWE-476
Description
A NULL pointer dereference in TIFFClose() is caused by a failure to open an output file (non-existent path or a path that requires permissions like /dev/null) while specifying zones.
Affected products
- libtiff: from 3.9.0 before 4.5.1 — fixed in 4.5.1
How to fix
Upgrade to a fixed version: libtiff 4.5.1. Check the vendor advisory for mitigations.
References
- https://gitlab.com/libtiff/libtiff/-/issues/515
- https://gitlab.com/libtiff/libtiff/-/merge_requests/468
- https://lists.debian.org/debian-lts-announce/2023/07/msg00034.html
- https://research.jfrog.com/vulnerabilities/libtiff-nullderef-dos-xray-522144/
- https://gitlab.com/libtiff/libtiff/-/issues/515
- https://gitlab.com/libtiff/libtiff/-/merge_requests/468
- https://lists.debian.org/debian-lts-announce/2023/07/msg00034.html
- https://lists.debian.org/debian-lts-announce/2025/01/msg00019.html
- https://research.jfrog.com/vulnerabilities/libtiff-nullderef-dos-xray-522144/
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