VDB-237828 · CVE-2023-38667 · EUVD-2023-42465

NASM 2.16 disasm stack-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.
4.5	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as critical has been found in NASM 2.16. This affects the function disasm. The manipulation results in stack-based overflow. This vulnerability was named CVE-2023-38667. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as problematic, was found in NASM 2.16 (Programming Tool Software). Affected is the function disasm. The manipulation with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on availability. CVE summarizes:

Stack-based buffer over-read in function disasm in nasm 2.16 allows attackers to cause a denial of service.

The weakness was presented 08/23/2023. The advisory is shared for download at bugzilla.nasm.us. This vulnerability is traded as CVE-2023-38667 since 07/23/2023. There are known technical details, but no exploit is available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-42465). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Programming Tool Software

Name

NASM

Version

2.16

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.5
VulDB Meta Temp Score: 4.5

VulDB Base Score: 3.5
VulDB Temp Score: 3.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/23/2023 🔍
08/23/2023 +31 days 🔍
08/23/2023 +0 days 🔍
01/19/2026 +880 days 🔍

Sourcesinfo

Advisory: bugzilla.nasm.us
Status: Confirmed

CVE: CVE-2023-38667 (🔍)
GCVE (CVE): GCVE-0-2023-38667
GCVE (VulDB): GCVE-100-237828
EUVD: 🔍

Entryinfo

Created: 08/23/2023 11:14
Updated: 01/19/2026 23:45
Changes: 08/23/2023 11:14 (38), 09/16/2023 11:50 (11), 01/19/2026 23:45 (16)
Complete: 🔍
Cache ID: 216::103