ISS X-Force Database: ftp-servu(205): FTP CWD buffer overflow

FTP CWD buffer overflow

ftp-servu (205)

Medium Risk

Description:

FTP Serv-U is vulnerable to a denial of service attack caused by a buffer overflow in the CWD command. By sending an argument to the CWD command containing a string of 155 characters or more, a remote attacker can overflow a buffer and crash the server or execute arbitrary code on the system.

Platforms Affected:

Apple, Mac OS
Cisco, IOS
Compaq, Tru64
Data General, DG/UX
HP, HP-UX
IBM, AIX
IBM, OS2
Linux, Kernel
Microsoft, Windows 2000
Microsoft, Windows 2003 Server
Microsoft, Windows 95
Microsoft, Windows 98
Microsoft, Windows 98SE
Microsoft, Windows Me
Microsoft, Windows NT 4.0
Microsoft, Windows XP
Novell, NetWare
Rhino Software, Serv-U FTP Server 2.5
SCO, SCO Unix
SGI, IRIX
Sun, Solaris
Various vendors, FTP
WindRiver, BSDOS

Remedy:

Upgrade to the latest version of Serv-U (3.1 or later), available from the Serv-U Web site. See References.

Consequences:

References:

BugTraq Mailing List, 1999-05-03 4:16:38, Buffer Overflows in FTP Serv-U 2.5 at http://marc.theaimsgroup.com/?l=ntbugtraq&m=92574916930144&w=2.
Serv-U Web site, Serv-U� 3.1 is Released! at http://www.serv-u.com/.
BID-269: Cat Soft Serv-U Buffer Overflow Vulnerabilities
CVE-1999-0219: Buffer overflow in FTP Serv-U 2.5 allows remote authenticated users to cause a denial of service (crash) via a long (1) CWD or (2) LS (list) command.

Reported:

Jul 01, 1997

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