yasm 1.3.0.55.g101bc /nasm/nasm-pp.c expand_mmac_params memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability has been found in yasm 1.3.0.55.g101bc and classified as critical. Impacted is the function expand_mmac_params of the file /nasm/nasm-pp.c. This manipulation causes memory corruption. This vulnerability is tracked as CVE-2023-31723. No exploit exists.

Detailsinfo

A vulnerability classified as critical was found in yasm 1.3.0.55.g101bc. Affected by this vulnerability is the function expand_mmac_params of the file /nasm/nasm-pp.c. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

yasm 1.3.0.55.g101bc was discovered to contain a segmentation violation via the function expand_mmac_params at /nasm/nasm-pp.c.

The weakness was disclosed 05/17/2023 as 220. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2023-31723 since 04/29/2023. Technical details of the vulnerability are known, but there is no available exploit.

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-2023-36014). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.5

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

NVD Base Score: 5.5
NVD Vector: 🔍

CNA Base Score: 5.5
CNA Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Memory corruption
CWE: 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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/29/2023 🔍
05/17/2023 +18 days 🔍
05/17/2023 +0 days 🔍
12/28/2025 +956 days 🔍

Sourcesinfo

Product: github.com

Advisory: 220
Status: Confirmed

CVE: CVE-2023-31723 (🔍)
GCVE (CVE): GCVE-0-2023-31723
GCVE (VulDB): GCVE-100-229267
EUVD: 🔍

Entryinfo

Created: 05/17/2023 18:05
Updated: 12/28/2025 04:42
Changes: 05/17/2023 18:05 (39), 01/22/2025 18:55 (33), 12/28/2025 04:42 (1)
Complete: 🔍
Cache ID: 216::103

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

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