libtiff 4.6.0 tiff2ps tools/tiff2ps.c PS_Lvl2page null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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2.4$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in libtiff 4.6.0. Impacted is the function PS_Lvl2page of the file tools/tiff2ps.c of the component tiff2ps. Executing a manipulation can lead to null pointer dereference. The identification of this vulnerability is CVE-2025-8534. The attack can only be executed locally. Furthermore, there is an exploit available. Applying a patch is advised to resolve 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."

Detailsinfo

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 with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability.

The advisory is shared for download at gitlab.com. This vulnerability was named CVE-2025-8534. The exploitation appears to be difficult. The attack needs to be approached locally. Technical details and also a public exploit are known.

It is possible to download the exploit at drive.google.com. It is declared as proof-of-concept. 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." The vulnerability scanner Nessus provides a plugin with the ID 249974 (Fedora 42 : libtiff (2025-a78662be2c)), which helps to determine the existence of the flaw in a target environment.

Applying the patch 6ba36f159fd396ad11bf6b7874554197736ecc8b is able to eliminate this problem. The bugfix is ready for download at gitlab.com.

The vulnerability is also documented in the databases at Tenable (249974), EUVD (EUVD-2025-23581) and CERT Bund (WID-SEC-2025-1717). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Open Source libTIFF

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 2.5
VulDB Meta Temp Score: 2.4

VulDB Base Score: 2.5
VulDB Temp Score: 2.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 2.5
CNA Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 249974
Nessus Name: Fedora 42 : libtiff (2025-a78662be2c)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: 6ba36f159fd396ad11bf6b7874554197736ecc8b

Timelineinfo

08/04/2025 Advisory disclosed
08/04/2025 +0 days VulDB entry created
08/18/2025 +13 days VulDB entry last update

Sourcesinfo

Product: libtiff.org

Advisory: 718
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2025-8534 (🔒)
GCVE (CVE): GCVE-0-2025-8534
GCVE (VulDB): GCVE-100-318664
EUVD: 🔒
CERT Bund: WID-SEC-2025-1717 - libTIFF (tiff2ps): Schwachstelle ermöglicht Denial of Service

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/04/2025 14:00
Updated: 08/18/2025 00:08
Changes: 08/04/2025 14:00 (62), 08/05/2025 03:31 (1), 08/05/2025 07:29 (30), 08/05/2025 13:15 (1), 08/05/2025 15:44 (7), 08/18/2025 00:08 (2)
Complete: 🔍
Submitter: rootsec
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #617831: libtiff tiff2ps 4.6.0 && the newest master SEGV (by rootsec)

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