CVE-2009-0537 json
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…
published 2009-03-09 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-0541
- cvss
- 4.9
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.6%
- EPSS 3.6% chance of exploitation in 30 days, percentile 89%
- public exploits
- 1
- Exploit-DB
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.
Patch / fix
Timeline
- First public exploit (EDB-8163)
- Published
Exploit prediction
3.59% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-8163 Libc - 'libc:fts_*()' Local Denial of Service dos, 2009-03-05
- securityfocus.com http://www.securityfocus.com/bid/34008 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 4.9 | AV:L/AC:L/Au:N/C:N/I:N/A:C |
Classification
- Weakness
-
- CWE-189 Numeric Errors
References
-
exploit-db.com
/exploits/8163
exploit
-
securityfocus.com
/bid/34008
vdb-entry, exploit
-
openbsd.org
/cgi-bin/cvsweb/src/lib/libc/gen/fts.c
vendor-advisory
-
securitytracker.com
/id?1021818
vdb-entry
-
securityreason.com
/achievement_securityalert/60
third-party-advisory
- openbsd.org /cgi-bin/cvsweb/src/lib/libc/gen/fts.c.diff?r1=1.41%3Br2=1.42%3Bf=h
-
securityfocus.com
/archive/1/501505/100/0/threaded
mailing-list
Sources
- CVE List CVE-2009-0537
- NVD CVE-2009-0537
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