Input validation error in Pure-FTPd - CVE-2011-0418
Published: May 25, 2011 / Updated: July 29, 2020
Vulnerability identifier: #VU32849
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2011-0418
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote #AU# to perform service disruption.
The glob implementation in Pure-FTPd before 1.0.32, and in libc in NetBSD 5.1, does not properly expand expressions containing curly brackets, which allows remote authenticated users to cause a denial of service (memory consumption) via a crafted FTP STAT command.
Affected software
Pure-FTPd
Gentoo Linux
pure-ftpd (Alpine package)
net-ftp/pure-ftpd
Gentoo Linux
pure-ftpd (Alpine package)
net-ftp/pure-ftpd
How to mitigate CVE-2011-0418
Install update from vendor's website.
Pure-FTPd - update to 1.0.32
pure-ftpd (Alpine package) - update to 1.0.32-r0
net-ftp/pure-ftpd - update to 1.0.32
pure-ftpd (Alpine package) - update to 1.0.32-r0
net-ftp/pure-ftpd - update to 1.0.32
Links to Public Exploits and PoC-codes
External References
- 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://securityreason.com/achievement_securityalert/97
- http://securityreason.com/securityalert/8228
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:094
- http://www.pureftpd.org/project/pure-ftpd/news
- http://www.securityfocus.com/bid/47671
- http://www.vupen.com/english/advisories/2011/1273
- https://bugzilla.redhat.com/show_bug.cgi?id=704283