VDB-246033 · CVE-2023-48105 · Issue 2726

Bytecode Alliance wasm-micro-runtime 1.2.3 wasm_loader.c wasm_loader_prepare_bytecode heap-based overflow

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.8	$0-$5k	0.00

Summaryinfo

A vulnerability marked as critical has been reported in Bytecode Alliance wasm-micro-runtime 1.2.3. The impacted element is the function wasm_loader_prepare_bytecode of the file core/iwasm/interpreter/wasm_loader.c. Performing a manipulation results in heap-based overflow. This vulnerability was named CVE-2023-48105. The attack may be initiated remotely. There is no available exploit. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability classified as critical has been found in Bytecode Alliance wasm-micro-runtime 1.2.3. This affects the function wasm_loader_prepare_bytecode of the file core/iwasm/interpreter/wasm_loader.c. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as 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(). This is going to have an impact on availability. The summary by CVE is:

An heap overflow vulnerability was discovered in Bytecode alliance wasm-micro-runtime v.1.2.3 allows a remote attacker to cause a denial of service via the wasm_loader_prepare_bytecode function in core/iwasm/interpreter/wasm_loader.c.

The weakness was presented 11/23/2023 as 2726. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2023-48105 since 11/13/2023. Technical details are known, but no exploit is available.

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

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-52186). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Bytecode Alliance

Name

wasm-micro-runtime

Version

1.2.3

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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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: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

11/13/2023 🔍
11/23/2023 +10 days 🔍
11/23/2023 +0 days 🔍
02/25/2026 +825 days 🔍

Sourcesinfo

Advisory: 2726
Status: Confirmed

CVE: CVE-2023-48105 (🔍)
GCVE (CVE): GCVE-0-2023-48105
GCVE (VulDB): GCVE-100-246033
EUVD: 🔍

Entryinfo

Created: 11/23/2023 06:48
Updated: 02/25/2026 12:44
Changes: 11/23/2023 06:48 (42), 12/16/2023 08:50 (11), 02/25/2026 12:44 (16)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.