72176 : NetBSD libc GLOB_LIMIT Resource Exhaustion DoS
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Timeline

Disclosure Date
2011-05-01

Description

NetBSD contains a flaw that may allow a remote denial of service. The issue is triggered when an insufficient GLOB_LIMIT implementation is exploited with a crafted command pattern to the ftpd or sftp server processes to exhaust memory and cause a denial of service.

Classification

Location: Remote / Network Access
Attack Type: Denial of Service
Impact: Loss of Availability
Solution: Patch / RCS
Exploit: Exploit Public
Disclosure: Vendor Verified, Coordinated Disclosure

Solution

Currently, there are no known workarounds or upgrades to correct this issue. However, The NetBSD Foundation has released a fix in the CVS repository.

Products

NetBSD Foundation, Inc.

NetBSD

5.1

References

CVE ID: 2011-0418 (see also: NVD)
Secunia Advisory ID: 44392 46603
Bugtraq ID: 47671
Related OSVDB ID: 90005 90051
VUPEN Advisory: ADV-2011-1273
Vendor Specific News/Changelog Entry: http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/gen/glob.c#rev1.28
http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/gen/glob.c.diff?r1=1.27&r2=1.28&f=h
http://www.gentoo.org/security/en/glsa/glsa-201110-25.xml
http://www.pureftpd.org/project/pure-ftpd/news
https://bugzilla.redhat.com/show_bug.cgi?id=704283
Packet Storm: http://packetstormsecurity.com/files/120032/FreeBSD-9.1-ftpd-Remote-Denial-Of-Service.html
http://packetstormsecurity.com/files/121281/Mac-OS-X-10.8.3-ftpd-Remote-Resource-Exhaustion.html
Mail List Post: http://seclists.org/bugtraq/2011/May/8
http://seclists.org/fulldisclosure/2011/May/40
Other Advisory URL: http://securityreason.com/achievement_securityalert/97
http://securityreason.com/securityalert/8228
http://www.mandriva.com/security/advisories?name=MDVSA-2011:094
Vendor URL: http://www.netbsd.org/

Credit

Maksymilian Arciemowicz - SecurityReason

CVSSv2 Score

CVSSv2 Base Score = 4.0
Source: nvd.nist.gov | Generated: 2011-05-25 | Disagree?

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