JasPer up to 4.2.5 JPEG2000 Encoder jpc_enc.c jpc_floorlog2 assertion

Summaryinfo

A vulnerability, which was classified as problematic, was found in JasPer up to 4.2.5. The impacted element is the function jpc_floorlog2 of the file src/libjasper/jpc/jpc_enc.c of the component JPEG2000 Encoder. Such manipulation leads to assertion. This vulnerability is referenced as CVE-2025-8836. The attack can only be performed from a local environment. Furthermore, an exploit is available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability was found in JasPer up to 4.2.5 and classified as problematic. Affected by this issue is the function jpc_floorlog2 of the file src/libjasper/jpc/jpc_enc.c of the component JPEG2000 Encoder. The manipulation with an unknown input leads to a assertion vulnerability. Using CWE to declare the problem leads to CWE-617. The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary. Impacted is availability.

The advisory is available at github.com. This vulnerability is handled as CVE-2025-8836. The exploitation is known to be easy. Local access is required to approach this attack. Technical details as well as a public exploit are known.

The exploit is available at drive.google.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 259919 (Linux Distros Unpatched Vulnerability : CVE-2025-8836), which helps to determine the existence of the flaw in a target environment.

Applying the patch 79185d32d7a444abae441935b20ae4676b3513d4 is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the databases at Tenable (259919) and CERT Bund (WID-SEC-2025-1755). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • SUSE openSUSE
  • Open Source JasPer

Productinfo

Type

Name

Version

License

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: 3.3
VulDB Meta Temp Score: 3.1

VulDB Base Score: 3.3
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 3.3
CNA Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Assertion
CWE: CWE-617
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: 259919
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-8836

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: 79185d32d7a444abae441935b20ae4676b3513d4

Timelineinfo

08/10/2025 Advisory disclosed
08/10/2025 +0 days VulDB entry created
09/16/2025 +37 days VulDB entry last update

Sourcesinfo

Advisory: 401
Status: Confirmed

CVE: CVE-2025-8836 (🔒)
GCVE (CVE): GCVE-0-2025-8836
GCVE (VulDB): GCVE-100-319370
CERT Bund: WID-SEC-2025-1755 - JasPer: Mehrere Schwachstellen

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

Entryinfo

Created: 08/10/2025 13:19
Updated: 09/16/2025 23:26
Changes: 08/10/2025 13:19 (28), 08/10/2025 13:20 (32), 08/11/2025 20:42 (7), 08/18/2025 08:26 (1), 08/31/2025 17:23 (2), 09/16/2025 23:26 (31)
Complete: 🔍
Submitter: nipc-cxd
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #622409: JasPer The newest master && jasper-4.2.5 Assertion Failure (by nipc-cxd)

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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