CVE-2025-8534: libtiff Null Dereference

Description

A vulnerability classified as problematic was found in libtiff 4.6.0. This vulnerability affects the function PS_Lvl2page of the file tools/tiff2ps.c of the component tiff2ps. The manipulation leads to null pointer dereference. It is possible to launch the attack on the local host. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used. The name of the patch is 6ba36f159fd396ad11bf6b7874554197736ecc8b. It is recommended to apply a patch to fix this issue. One of the maintainers explains, that "[t]his error only occurs if DEFER_STRILE_LOAD (defer-strile-load:BOOL=ON) or TIFFOpen( .. "rD") option is used."

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CVSS v3.1 Score

2.5

LOW

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

Weakness Type (CWE)

CWE-404 CWE-404

CWE-476 CWE-476

Affected Products

Vendor	Product	Versions
libtiff	libtiff	All

References

Advisories & Patches

https://gitlab.com/libtiff/libtiff/-/commit/6ba36f159fd396ad11bf6b7874554197736ecc8b https://gitlab.com/libtiff/libtiff/-/issues/718 https://gitlab.com/libtiff/libtiff/-/issues/718

Exploits

https://drive.google.com/file/d/15JPA3kLYiYD-nRNJ8y8HmnYjhv9NE7k6/view?usp=drive_link https://gitlab.com/libtiff/libtiff/-/issues/718 https://gitlab.com/libtiff/libtiff/-/issues/718

Other References

http://www.libtiff.org/ https://gitlab.com/libtiff/libtiff/-/merge_requests/746 https://vuldb.com/?ctiid.318664 https://vuldb.com/?id.318664 https://vuldb.com/?submit.617831 https://vuldb.com/?submit.617831

Frequently Asked Questions

What is CVE-2025-8534? +

A vulnerability classified as problematic was found in libtiff 4.6.0. This vulnerability affects the function PS_Lvl2page of the file tools/tiff2ps.c of the component tiff2ps. The manipulation leads to null pointer dereference. It is possible to launch the attack on the local host. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used. The name of the patch is 6ba36f159fd396ad11bf6b7874554197736ecc8b. It is recommended to apply a patch to fix this issue. One of the maintainers explains, that "[t]his error only occurs if DEFER_STRILE_LOAD (defer-strile-load:BOOL=ON) or TIFFOpen( .. "rD") option is used." It has a CVSS v3.1 base score of 2.5 (LOW).

How severe is CVE-2025-8534? +

CVE-2025-8534 has a CVSS v3.1 score of 2.5 out of 10, rated LOW. This is a low-severity vulnerability with limited impact.

What products are affected by CVE-2025-8534? +

CVE-2025-8534 affects products from libtiff, specifically: libtiff. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-8534? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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