Cyber Resilience

CVE-2023-48234

Memory Safety in Fedoraproject Fedora 37 … 39

Memory Safety
Published
16 November 2023
Modified
23 June 2026
Patch / advisory
View advisory
CVSS Score v3.1 2.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
EPSS Score 0.0075 51th percentile
Risk Priority 15 floored blend · peak EPSS

Summary

CVE-2023-48234 is a low-severity Integer Overflow or Wraparound (CWE-190) vulnerability in Fedoraproject Fedora. Its CVSS base score is 2.8 (Low).

Operationally, exploitation aligns with the MITRE ATT&CK technique Application or System Exploitation (T1499.004); ranked in the top 49% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability Data

Vim is an open source command line text editor. When getting the count for a normal mode z command, it may overflow for large counts given. Impact is low, user interaction is required and a crash may not even happen…

more

in all situations. This issue has been addressed in commit `58f9befca1` which has been included in release version 9.0.2109. Users are advised to upgrade. There are no known workarounds for this vulnerability.

CWE(s)
CWE-190

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1499.004 Application or System Exploitation Impact
Adversaries may exploit software vulnerabilities that can cause an application or system to crash and deny availability to users.
attack.mitre.org →
Why these techniques?

The vulnerability causes an integer overflow in Vim's normal mode 'z' command count handling, potentially leading to a crash with user interaction, enabling endpoint denial of service through application exploitation.

CVEs Like This One

CVE-2023-48237Same product: Fedoraproject Fedora
CVE-2023-48235Same product: Fedoraproject Fedora
CVE-2023-48233Same product: Fedoraproject Fedora
CVE-2023-48236Same product: Fedoraproject Fedora
CVE-2024-22667Same product: Fedoraproject Fedora
CVE-2023-5535Same product: Fedoraproject Fedora
CVE-2023-5344Same product: Fedoraproject Fedora
CVE-2023-5441Same product: Fedoraproject Fedora
CVE-2023-2609Same product: Fedoraproject Fedora
CVE-2023-0049Same product: Fedoraproject Fedora

Affected Assets

vim
vim
≤ 9.0.2109
fedoraproject
fedora
37, 38, 39

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V5.2.6

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.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly require use of safe arithmetic, bounds checks, and testing that prevent integer overflows.

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.8.29 Security testing in development and acceptance mostly match
detects

Security testing in development can detect integer overflows before release.

A.8.25 Secure development life cycle partial match
prevents

Secure SDLC mandates input validation and arithmetic checks that prevent integer overflows.

A.8.26 Application security requirements partial match
degrades

Application security requirements include bounds checking and safe arithmetic to avoid overflow conditions.

A.8.27 Secure system architecture and engineering principles partial match
degrades

Secure architecture principles require defensive coding patterns that mitigate integer wraparound risks.

A.8.28 Secure coding partial match
prevents

Secure coding standards explicitly forbid unsafe integer operations and mandate overflow-safe constructs.

References