LibRaw up to 0.21.3 load_mfbacks.cpp phase_one_correct w0/w1 out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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2.6$0-$5k0.00

Summaryinfo

A vulnerability was found in LibRaw up to 0.21.3. It has been declared as problematic. The impacted element is the function phase_one_correct of the file decoders/load_mfbacks.cpp. Executing a manipulation of the argument w0/w1 can lead to out-of-bounds. This vulnerability is tracked as CVE-2025-43962. The attack is restricted to local execution. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in LibRaw up to 0.21.3 and classified as problematic. This vulnerability affects the function phase_one_correct of the file decoders/load_mfbacks.cpp. The manipulation of the argument w0/w1 with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality. CVE summarizes:

In LibRaw before 0.21.4, phase_one_correct in decoders/load_mfbacks.cpp has out-of-bounds reads for tag 0x412 processing, related to large w0 or w1 values or the frac and mult calculations.

The advisory is shared for download at libraw.org. This vulnerability was named CVE-2025-43962 since 04/20/2025. The exploitation appears to be difficult. The attack needs to be approached locally. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 234920 (SUSE SLES12 Security Update : libraw (SUSE-SU-2025:1380-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 0.21.4 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 66fe663e02a4dd610b4e832f5d9af326709336c2 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (234920) and EUVD (EUVD-2025-11961). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.7
VulDB Meta Temp Score: 2.6

VulDB Base Score: 2.5
VulDB Temp Score: 2.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 2.9
CNA Vector (MITRE): 🔍

CVSSv2info

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

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 234920
Nessus Name: SUSE SLES12 Security Update : libraw (SUSE-SU-2025:1380-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: LibRaw 0.21.4
Patch: 66fe663e02a4dd610b4e832f5d9af326709336c2

Timelineinfo

04/20/2025 🔍
04/21/2025 +1 days 🔍
04/21/2025 +0 days 🔍
05/25/2025 +33 days 🔍

Sourcesinfo

Product: github.com

Advisory: libraw.org
Status: Confirmed

CVE: CVE-2025-43962 (🔍)
GCVE (CVE): GCVE-0-2025-43962
GCVE (VulDB): GCVE-100-305752
EUVD: 🔍

Entryinfo

Created: 04/21/2025 03:03
Updated: 05/25/2025 01:03
Changes: 04/21/2025 03:03 (69), 04/29/2025 12:42 (2), 05/25/2025 01:03 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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