Vulnerability CVE-2010-4755


Published: 2011-03-02   Modified: 2012-02-13

Description:
The (1) remote_glob function in sftp-glob.c and the (2) process_put function in sftp.c in OpenSSH 5.8 and earlier, as used in FreeBSD 7.3 and 8.1, NetBSD 5.0.2, OpenBSD 4.7, and other products, allow remote authenticated users to cause a denial of service (CPU and memory consumption) via crafted glob expressions that do not match any pathnames, as demonstrated by glob expressions in SSH_FXP_STAT requests to an sftp daemon, a different vulnerability than CVE-2010-2632.

See advisories in our WLB2 database:
Topic
Author
Date
High
*bsd libc/glob resource exhaustion (ftpd exploit)
Maksymilian Arci...
04.03.2011

Type:

CWE-399

(Resource Management Errors)

CVSS2 => (AV:N/AC:L/Au:S/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4/10
2.9/10
8/10
Exploit range
Attack complexity
Authentication
Remote
Low
Single time
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Openssh -> Openssh 
Openbsd -> Openbsd 
Openbsd -> Openssh 
Netbsd -> Netbsd 
Freebsd -> Freebsd 

 References:
http://cvsweb.netbsd.org/cgi-bin/cvsweb.cgi/src/crypto/dist/ssh/Attic/sftp.c#rev1.21.6.1
http://cvsweb.netbsd.org/cgi-bin/cvsweb.cgi/src/crypto/dist/ssh/Attic/sftp-glob.c#rev1.13.12.1
http://securityreason.com/securityalert/8116
http://securityreason.com/exploitalert/9223
http://securityreason.com/achievement_securityalert/89
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2010-008.txt.asc
http://cxib.net/stuff/glob-0day.c

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