CVE-2023-4875

Memory Safety in Debian Linux 10.0 … 12.0

Memory Safety

Published

09 September 2023

Modified

21 November 2024

Patch / advisory

View advisory

CVSS Score v3.1 2.2

Click a component to see what it means

Raw vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L

EPSS Score 0.0055 45th percentile

Risk Priority 23 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2023-4875 is a low-severity Undefined Behavior for Input to API (CWE-475) vulnerability in Debian Debian Linux. Its CVSS base score is 2.2 (Low).

Operationally, exploitation aligns with the MITRE ATT&CK technique Protocol or Service Impersonation (T1001.003); ranked at the 45th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2023-54714

Vulnerability Data

Null pointer dereference when composing from a specially crafted draft message in Mutt >1.5.2 <2.2.12

CWE(s): CWE-475 CWE-476

Related Threats

MITRE ATT&CK Enterprise Techniques

T1001.003 Protocol or Service Impersonation Command And Control

Adversaries may impersonate legitimate protocols or web service traffic to disguise command and control activity and thwart analysis efforts.

attack.mitre.org →

T1003 OS Credential Dumping Credential Access

Adversaries may attempt to dump credentials to obtain account login and credential material, normally in the form of a hash or a clear text password.

attack.mitre.org →

T1003.004 LSA Secrets Credential Access

Adversaries with SYSTEM access to a host may attempt to access Local Security Authority (LSA) secrets, which can contain a variety of different credential materials, such as credentials for service accounts.

attack.mitre.org →

T1003.006 DCSync Credential Access

Adversaries may attempt to access credentials and other sensitive information by abusing a Windows Domain Controller's application programming interface (API)(Citation: Microsoft DRSR Dec 2017) (Citation: Microsoft GetNCCChanges) (Citati…

attack.mitre.org →

T1003.007 Proc Filesystem Credential Access

Adversaries may gather credentials from the proc filesystem or `/proc`.

attack.mitre.org →

T1005 Data from Local System Collection

Adversaries may search local system sources, such as file systems, configuration files, local databases, virtual machine files, or process memory, to find files of interest and sensitive data prior to Exfiltration.

attack.mitre.org →

Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-4874Same product: Debian Debian Linux

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CVE-2025-38100Same product: Debian Debian Linux

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CVE-2024-35902Same product: Debian Debian Linux

CVE-2025-38581Same product: Debian Debian Linux

CVE-2025-38694Same product: Debian Debian Linux

CVE-2025-38023Same product: Debian Debian Linux

CVE-2025-38147Same product: Debian Debian Linux

Affected Assets

mutt

1.5.2 — 2.2.12

debian

debian linux

10.0, 11.0, 12.0

Mitigating Controls

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

ID.RA-01 partial match

blocks

Vulnerability identification processes can discover and record this class of API-related weakness.

PR.PS-06 partial match

blocks

Secure SDLC practices (coding standards, reviews, testing) directly prevent undefined behavior from invalid API inputs.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.5.14 Information transfer partial match

removes

A.5.15 Access control partial match

removes

A.5.16 Identity management partial match

removes

A.5.17 Authentication information partial match

removes

A.5.18 Access rights partial match

removes

A.8.10 Information deletion partial match

removes