CVE-2023-3316 — A NULL pointer dereference in TIFFClose() is caused by a failure to open an outp

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.

01What is this vulnerability?

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.

02Affected products

Vendor	Product	Versions
libtiff	libtiff	3.9.0

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

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

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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: 2023-06-19T11:10:41.964Z
• Last modified: 2025-11-03T20:35:32.533Z

09References

• research.jfrog.com — https://research.jfrog.com/vulnerabilities/libtiff-nullderef-dos-xray-522144/
• gitlab.com — https://gitlab.com/libtiff/libtiff/-/issues/515
• gitlab.com — https://gitlab.com/libtiff/libtiff/-/merge_requests/468
• lists.debian.org — https://lists.debian.org/debian-lts-announce/2023/07/msg00034.html