Home/CVE/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
CVE

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

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.

MEDIUM · CVSS 4.9 EPSS 0.0795
Schedule remediation
  • EPSS percentile: top 8% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
▤

Affected Products & Versions

3
microsoft interixall versions
openbsd<= 4.4
openbsdall versions
⚠

Public Exploits & PoCs

3
dosLibc - 'libc:fts_*()' Local Denial of Serviceverified
pocwww.securityfocus.com · 34008www.securityfocus.com
pocwww.exploit-db.com · 8163www.exploit-db.com
▣

Scoring & Timeline

4.9
MEDIUM · CVSS v2 (legacy) · cve@mitre.org
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:L/AC:L/Au:N/C:N/I:N/A:C
Published to NVD09 Mar 2009 · 09:30 PM
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://securityreason.com/achievement_securityalert/60
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gen/fts.cVendor Advisory
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gen/fts.c.diff?r1=1.41
http://www.securityfocus.com/archive/1/501505/100/0/threaded
http://www.securitytracker.com/id?1021818
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