Integer overflow in the fts_build function in fts.c in libc in (1) OpenBSD 4.4 and…
Priority LOW 29CWE-189Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Complete
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-189 and the CVSS impact.
Summary
Integer overflow in the fts_build function in fts.c in libc in (1) OpenBSD 4.4 and earlier and (2) Microsoft Interix 6.0 build 10.0.6030.0 allows context-dependent attackers to cause a denial of service (application crash) via a deep directory tree, related to the fts_level structure member, as demonstrated by (a) du, (b) rm, (c) chmod, and (d) chgrp on OpenBSD; and (e) SearchIndexer.exe on Vista Enterprise.
Why it matters now
EPSS 0.03592 89th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 26
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:microsoft:interix:6.0:*:10.0.6030.0:*:*:*:*:* | 6.0 | Vulnerable | Microsoft |
| cpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:* | up to 4.4 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:2.0:*:*:*:*:*:*:* | 2.0 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:2.1:*:*:*:*:*:*:* | 2.1 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:2.2:*:*:*:*:*:*:* | 2.2 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:2.3:*:*:*:*:*:*:* | 2.3 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:2.4:*:*:*:*:*:*:* | 2.4 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:2.5:*:*:*:*:*:*:* | 2.5 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:2.6:*:*:*:*:*:*:* | 2.6 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:2.7:*:*:*:*:*:*:* | 2.7 | Vulnerable | OpenBSD |
- cpe:2.3:a:microsoft:interix:6.0:*:10.0.6030.0:*:*:*:*:* Versions 6.0 Vulnerable ·Microsoft
- cpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:* Versions up to 4.4 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:2.0:*:*:*:*:*:*:* Versions 2.0 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:2.1:*:*:*:*:*:*:* Versions 2.1 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:2.2:*:*:*:*:*:*:* Versions 2.2 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:2.3:*:*:*:*:*:*:* Versions 2.3 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:2.4:*:*:*:*:*:*:* Versions 2.4 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:2.5:*:*:*:*:*:*:* Versions 2.5 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:2.6:*:*:*:*:*:*:* Versions 2.6 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:2.7:*:*:*:*:*:*:* Versions 2.7 Vulnerable ·OpenBSD
Show 16 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:openbsd:openbsd:2.8:*:*:*:*:*:*:* | 2.8 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:2.9:*:*:*:*:*:*:* | 2.9 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:3.0:*:*:*:*:*:*:* | 3.0 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:3.1:*:*:*:*:*:*:* | 3.1 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:3.2:*:*:*:*:*:*:* | 3.2 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:3.3:*:*:*:*:*:*:* | 3.3 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:3.4:*:*:*:*:*:*:* | 3.4 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:3.5:*:*:*:*:*:*:* | 3.5 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:3.6:*:*:*:*:*:*:* | 3.6 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:3.7:*:*:*:*:*:*:* | 3.7 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:3.8:*:*:*:*:*:*:* | 3.8 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:3.9:*:*:*:*:*:*:* | 3.9 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:4.0:*:*:*:*:*:*:* | 4.0 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:4.1:*:*:*:*:*:*:* | 4.1 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:4.2:*:*:*:*:*:*:* | 4.2 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:4.3:*:*:*:*:*:*:* | 4.3 | Vulnerable | OpenBSD |
- cpe:2.3:o:openbsd:openbsd:2.8:*:*:*:*:*:*:* Versions 2.8 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:2.9:*:*:*:*:*:*:* Versions 2.9 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:3.1:*:*:*:*:*:*:* Versions 3.1 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:3.2:*:*:*:*:*:*:* Versions 3.2 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:3.3:*:*:*:*:*:*:* Versions 3.3 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:3.4:*:*:*:*:*:*:* Versions 3.4 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:3.5:*:*:*:*:*:*:* Versions 3.5 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:3.6:*:*:*:*:*:*:* Versions 3.6 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:3.7:*:*:*:*:*:*:* Versions 3.7 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:3.8:*:*:*:*:*:*:* Versions 3.8 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:3.9:*:*:*:*:*:*:* Versions 3.9 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:4.1:*:*:*:*:*:*:* Versions 4.1 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:4.2:*:*:*:*:*:*:* Versions 4.2 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:4.3:*:*:*:*:*:*:* Versions 4.3 Vulnerable ·OpenBSD
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2009-0537
- 2026-10-03 Alias added: GHSA-9fjq-qvpr-gcq2
References
Sources
- CVE-2009-0537 · CVE Program
- CVE-2009-0537 · NVD
- FIRST EPSS
- GHSA-9fjq-qvpr-gcq2 · GitHub Advisory Database · CC BY 4.0
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