Cyber Resilience

CVE-2023-40305

Memory Safety in Gnu Indent 2.2.13

Public PoCMemory Safety
Published
14 August 2023
Modified
21 November 2024
Patch / advisory
CVSS Score v3.1 5.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS Score 0.0042 35th percentile
Risk Priority 35 floored blend · peak EPSS

Summary

CVE-2023-40305 is a medium-severity Out-of-bounds Write (CWE-787) vulnerability in Gnu Indent. Its CVSS base score is 5.5 (Medium).

Operationally, ranked at the 35th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability Data

GNU indent 2.2.13 has a heap-based buffer overflow in search_brace in indent.c via a crafted file.

CWE(s)

Related Threats

CVEs Like This One

CVE-2024-0911Same product: Gnu Indent
CVE-2023-36271Same vendor: Gnu
CVE-2023-36272Same vendor: Gnu
CVE-2023-25222Same vendor: Gnu
CVE-2023-36274Same vendor: Gnu
CVE-2023-25139Same vendor: Gnu
CVE-2025-0686Same vendor: Gnu
CVE-2023-39130Same vendor: Gnu
CVE-2025-1125Same vendor: Gnu
CVE-2023-36273Same vendor: Gnu

Affected Assets

gnu
indent
2.2.13

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-787

Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.

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-development practices (static analysis, bounds checking, code review) are the primary means of preventing out-of-bounds writes.

ID.RA-01 partial match
prevents

Vulnerability scanning and recording can discover out-of-bounds write flaws so they can be remediated.

PR.PS-02 partial match
prevents

Patching or replacing vulnerable software directly eliminates known instances of this coding weakness.

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.

detects

Security testing in development and acceptance can detect and prevent out-of-bounds write defects.

prevents

Secure development life cycle mandates practices that prevent out-of-bounds writes.

prevents

Application security requirements can specify bounds-checking and safe memory handling.

prevents

Secure architecture and engineering principles reduce the likelihood of buffer overflows.

prevents

Secure coding directly addresses out-of-bounds writes through language choice and coding standards.

prevents

Change management can enforce review gates that catch unsafe memory operations before deployment.

References