U-Boot up to 2022.07-rc5 Squashfs heap-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in U-Boot up to 2022.07-rc5. This vulnerability affects unknown code of the component Squashfs Handler. The manipulation leads to heap-based overflow. This vulnerability is documented as CVE-2022-33967. There is not any exploit available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in U-Boot up to 2022.07-rc5. This issue affects some unknown processing of the component Squashfs Handler. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability. The summary by CVE is:

squashfs filesystem implementation of U-Boot versions from v2020.10-rc2 to v2022.07-rc5 contains a heap-based buffer overflow vulnerability due to a defect in the metadata reading process. Loading a specially crafted squashfs image may lead to a denial-of-service (DoS) condition or arbitrary code execution.

The weakness was released 07/20/2022 as 7f7fb9937c6cb49dd35153bd6708872b390b0a44. The advisory is shared at source.denx.de. The identification of this vulnerability is CVE-2022-33967 since 06/29/2022. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 235044 (Debian dla-4150 : u-boot - security update), which helps to determine the existence of the flaw in a target environment.

Applying the patch 7f7fb9937c6cb49dd35153bd6708872b390b0a44 is able to eliminate this problem. The bugfix is ready for download at source.denx.de.

The vulnerability is also documented in the vulnerability database at Tenable (235044). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 235044
Nessus Name: Debian dla-4150 : u-boot - security update

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 7f7fb9937c6cb49dd35153bd6708872b390b0a44

Timelineinfo

06/29/2022 🔍
07/20/2022 +21 days 🔍
07/20/2022 +0 days 🔍
11/04/2025 +1203 days 🔍

Sourcesinfo

Advisory: 7f7fb9937c6cb49dd35153bd6708872b390b0a44
Status: Confirmed

CVE: CVE-2022-33967 (🔍)
GCVE (CVE): GCVE-0-2022-33967
GCVE (VulDB): GCVE-100-204581

Entryinfo

Created: 07/20/2022 12:57
Updated: 11/04/2025 16:31
Changes: 07/20/2022 12:57 (41), 08/15/2022 11:17 (11), 05/01/2025 17:12 (20), 11/04/2025 16:31 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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