MongoDB libbson/Server bson_append functions heap-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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7.8$0-$5k0.00

Summaryinfo

A vulnerability has been found in MongoDB libbson and Server and classified as critical. This vulnerability affects the function bson_append functions. This manipulation causes heap-based overflow. This vulnerability is registered as CVE-2025-0755. The attack needs to be launched locally. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in MongoDB libbson and Server (the affected version unknown). It has been declared as critical. Affected by this vulnerability is the function bson_append functions. The manipulation with an unknown input leads to a heap-based overflow vulnerability. The CWE definition for the vulnerability is 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(). As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The various bson_append functions in the MongoDB C driver library may be susceptible to buffer overflow when performing operations that could result in a final BSON document which exceeds the maximum allowable size (INT32_MAX), resulting in a segmentation fault and possible application crash. This issue affected libbson versions prior to 1.27.5, MongoDB Server v8.0 versions prior to 8.0.1 and MongoDB Server v7.0 versions prior to 7.0.16

The weakness was published by selmelc. It is possible to read the advisory at jira.mongodb.org. This vulnerability is known as CVE-2025-0755 since 01/27/2025. The exploitation appears to be easy. Attacking locally is a requirement. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 235667 (Debian dla-4160 : libbson-xs-perl - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (235667). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.9
VulDB Meta Temp Score: 7.8

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

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 8.4
CNA Vector (mongodb): 🔍

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: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 235667
Nessus Name: Debian dla-4160 : libbson-xs-perl - security update

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/27/2025 🔍
03/18/2025 +50 days 🔍
03/18/2025 +0 days 🔍
09/23/2025 +189 days 🔍

Sourcesinfo

Advisory: jira.mongodb.org
Researcher: selmelc
Status: Confirmed

CVE: CVE-2025-0755 (🔍)
GCVE (CVE): GCVE-0-2025-0755
GCVE (VulDB): GCVE-100-299995

Entryinfo

Created: 03/18/2025 10:16
Updated: 09/23/2025 03:38
Changes: 03/18/2025 10:16 (64), 03/18/2025 12:12 (1), 05/10/2025 10:18 (2), 09/23/2025 03:38 (11)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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