Vulnerability CVE-2013-4359
Published: 2013-09-30   Modified: 2013-10-06

Description:
Integer overflow in kbdint.c in mod_sftp in ProFTPD 1.3.4d and 1.3.5r3 allows remote attackers to cause a denial of service (memory consumption) via a large response count value in an authentication request, which triggers a large memory allocation.

See advisories in our WLB2 database:
Topic
Author
Date
High
ProFTPd mod_sftp/mod_sftp_pam invalid pool allocation during kbdint authentication
Kingcope
14.09.2013

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Proftpd -> Proftpd 

 References:
http://bugs.proftpd.org/show_bug.cgi?id=3973
http://kingcope.wordpress.com/2013/09/11/proftpd-mod_sftpmod_sftp_pam-invalid-pool-allocation-in-kbdint-authentication/
http://lists.opensuse.org/opensuse-updates/2013-10/msg00032.html
http://lists.opensuse.org/opensuse-updates/2015-06/msg00020.html
http://www.debian.org/security/2013/dsa-2767
http://www.openwall.com/lists/oss-security/2013/09/17/6
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