Vulnerability Monitor

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CVE-2009-0537

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.

Security Impact Summary

CVE-2009-0537 is a security vulnerability that . Impacting 2 products from microsoft, from openbsd organizations running these solutions should prioritize assessment and patching.

Historical Context

Originally identified in 2009, this vulnerability predates many modern security frameworks and practices. The vulnerability landscape of that era was characterized by different threat models and less mature defense mechanisms compared to contemporary standards.

Published

2009-03-09T21:30:00.203

Last Modified

2025-04-09T00:30:58.490

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 4.9 (MEDIUM)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:N/I:N/A:C

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: COMPLETE

Exploitability Score

3.9

Impact Score

6.9

Weaknesses

Type: Primary
CWE-189

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	microsoft	interix	6.0	Yes
Operating System	openbsd	openbsd	≤ 4.4	Yes
Operating System	openbsd	openbsd	2.0	Yes
Operating System	openbsd	openbsd	2.1	Yes
Operating System	openbsd	openbsd	2.2	Yes
Operating System	openbsd	openbsd	2.3	Yes
Operating System	openbsd	openbsd	2.4	Yes
Operating System	openbsd	openbsd	2.5	Yes
Operating System	openbsd	openbsd	2.6	Yes
Operating System	openbsd	openbsd	2.7	Yes
Operating System	openbsd	openbsd	2.8	Yes
Operating System	openbsd	openbsd	2.9	Yes
Operating System	openbsd	openbsd	3.0	Yes
Operating System	openbsd	openbsd	3.1	Yes
Operating System	openbsd	openbsd	3.2	Yes
Operating System	openbsd	openbsd	3.3	Yes
Operating System	openbsd	openbsd	3.4	Yes
Operating System	openbsd	openbsd	3.5	Yes
Operating System	openbsd	openbsd	3.6	Yes
Operating System	openbsd	openbsd	3.7	Yes
Operating System	openbsd	openbsd	3.8	Yes
Operating System	openbsd	openbsd	3.9	Yes
Operating System	openbsd	openbsd	4.0	Yes
Operating System	openbsd	openbsd	4.1	Yes
Operating System	openbsd	openbsd	4.2	Yes
Operating System	openbsd	openbsd	4.3	Yes

References

http://securityreason.com/achievement_securityalert/60 ([email protected])
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gen/fts.c Vendor Advisory ([email protected])
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gen/fts.c.diff?r1=1.41%3Br2=1.42%3Bf=h ([email protected])
http://www.securityfocus.com/archive/1/501505/100/0/threaded ([email protected])
http://www.securityfocus.com/bid/34008 Exploit ([email protected])
http://www.securitytracker.com/id?1021818 ([email protected])
https://www.exploit-db.com/exploits/8163 ([email protected])
http://securityreason.com/achievement_securityalert/60 (af854a3a-2127-422b-91ae-364da2661108)
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gen/fts.c Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gen/fts.c.diff?r1=1.41%3Br2=1.42%3Bf=h (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/archive/1/501505/100/0/threaded (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/34008 Exploit (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id?1021818 (af854a3a-2127-422b-91ae-364da2661108)
https://www.exploit-db.com/exploits/8163 (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For microsoft's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.