DENEX U-Boot prior 2025.01-rc1 ext4 Symlink Resolution integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in DENEX U-Boot. Affected by this issue is some unknown functionality of the component ext4 Symlink Resolution Handler. Executing a manipulation can lead to integer overflow. The identification of this vulnerability is CVE-2024-57256. The attack can only be executed locally. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in DENEX U-Boot. It has been declared as critical. This vulnerability affects an unknown function of the component ext4 Symlink Resolution Handler. The manipulation with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

An integer overflow in ext4fs_read_symlink in Das U-Boot before 2025.01-rc1 occurs for zalloc (adding one to an le32 variable) via a crafted ext4 filesystem with an inode size of 0xffffffff, resulting in a malloc of zero and resultant memory overwrite.

The advisory is shared for download at seclists.org. This vulnerability was named CVE-2024-57256. The exploitation appears to be easy. The attack needs to be approached locally. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 216981 (openSUSE 15 Security Update : u-boot (SUSE-SU-2025:0755-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2025.01-rc1 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (216981) and EUVD (EUVD-2025-4765). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.1
CNA Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 216981
Nessus Name: openSUSE 15 Security Update : u-boot (SUSE-SU-2025:0755-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: U-Boot 2025.01-rc1

Timelineinfo

02/18/2025 🔍
02/18/2025 +0 days 🔍
06/01/2025 +103 days 🔍

Sourcesinfo

Advisory: seclists.org
Status: Confirmed

CVE: CVE-2024-57256 (🔍)
GCVE (CVE): GCVE-0-2024-57256
GCVE (VulDB): GCVE-100-296044
EUVD: 🔍

Entryinfo

Created: 02/18/2025 01:15
Updated: 06/01/2025 05:48
Changes: 02/18/2025 01:15 (50), 02/19/2025 10:39 (12), 03/01/2025 15:48 (2), 06/01/2025 05:48 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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