CVE-2023-2731 — A NULL pointer dereference flaw was found in Libtiff's LZWDecode() function in t
A NULL pointer dereference flaw was found in Libtiff's LZWDecode() function in the libtiff/tif_lzw.c file. This flaw allows a local attacker to craft specific input data that can cause the program to dereference a NULL pointer when decompressing a TIFF format file, resulting
Published
2023-05-17T00:00:00.000Z
Last modified
2025-01-22T18:22:52.418Z
01What is this vulnerability?
A NULL pointer dereference flaw was found in Libtiff's LZWDecode() function in the libtiff/tif_lzw.c file. This flaw allows a local attacker to craft specific input data that can cause the program to dereference a NULL pointer when decompressing a TIFF format file, resulting in a program crash or denial of service.
02Affected products
| Vendor | Product | Versions |
|---|
| n | a / libtiff | Fixed in libtiff v4.5.0 |
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
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
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: 2023-05-17T00:00:00.000Z
- Last modified: 2025-01-22T18:22:52.418Z
09References
- gitlab.com — https://gitlab.com/libtiff/libtiff/-/issues/548
- bugzilla.redhat.com — https://bugzilla.redhat.com/show_bug.cgi?id=2207635
- github.com — https://github.com/libsdl-org/libtiff/commit/9be22b639ea69e102d3847dca4c53ef025e…
- access.redhat.com — https://access.redhat.com/security/cve/CVE-2023-2731
- security.netapp.com — https://security.netapp.com/advisory/ntap-20230703-0009/
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