NASM Netwide Assember 2.17rc0 outmacho.c macho_no_dead_strip heap-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in NASM Netwide Assember 2.17rc0. This vulnerability affects the function macho_no_dead_strip of the file outmacho.c. Performing a manipulation results in heap-based overflow. This vulnerability is reported as CVE-2025-8843. The attack requires a local approach. Moreover, an exploit is present.

Detailsinfo

A vulnerability, which was classified as critical, was found in NASM Netwide Assember 2.17rc0. This affects the function macho_no_dead_strip of the file outmacho.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 confidentiality, integrity, and availability.

The advisory is shared at bugzilla.nasm.us. This vulnerability is uniquely identified as CVE-2025-8843. The exploitability is told to be easy. An attack has to be approached locally. Technical details and a public exploit are known.

The exploit is shared for download at drive.google.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 259925 (Linux Distros Unpatched Vulnerability : CVE-2025-8843), which helps to determine the existence of the flaw in a target environment.

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 Tenable (259925). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔍
CNA CVSS-BT Score: 🔍
CNA Vector: 🔍

CVSSv3info

VulDB Meta Base Score: 6.1
VulDB Meta Temp Score: 6.0

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 5.3
CNA 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: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 259925
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-8843

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/10/2025 🔍
08/10/2025 +0 days 🔍
09/15/2025 +36 days 🔍

Sourcesinfo

Advisory: 3392934/3392935
Status: Not defined

CVE: CVE-2025-8843 (🔍)
GCVE (CVE): GCVE-0-2025-8843
GCVE (VulDB): GCVE-100-319377
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/10/2025 18:01
Updated: 09/15/2025 17:43
Changes: 08/10/2025 18:01 (57), 08/31/2025 17:23 (2), 09/15/2025 17:43 (41)
Complete: 🔍
Submitter: xdcao
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #623185: nasm NASM version 2.17rc0 compiled on Jul 20 2025 and the newest master (888d9ab) Memory Corruption (by xdcao)

Duplicate

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

Discussion

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