Input validation error in ProFTPD - CVE-2011-1137
Published: March 11, 2011 / Updated: August 11, 2020
Vulnerability identifier: #VU45231
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2011-1137
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
Integer overflow in the mod_sftp (aka SFTP) module in ProFTPD 1.3.3d and earlier allows remote attackers to cause a denial of service (memory consumption leading to OOM kill) via a malformed SSH message.
Affected software
ProFTPD
Fedora
Slackware Linux
proftpd
Fedora
Slackware Linux
proftpd
How to mitigate CVE-2011-1137
Install update from vendor's website.
proftpd - addressed in versions 1.3.3e-1.el5, 1.3.3e-1.el6
Links to Public Exploits and PoC-codes
External References
- http://bugs.proftpd.org/show_bug.cgi?id=3586
- http://bugs.proftpd.org/show_bug.cgi?id=3587
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058344.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058356.html
- http://proftp.cvs.sourceforge.net/viewvc/proftp/proftpd/contrib/mod_sftp/mod_sftp.c?r1=1.29.2.1&r2=1.29.2.2
- http://proftp.cvs.sourceforge.net/viewvc/proftp/proftpd/contrib/mod_sftp/packet.c?r1=1.14.2.2&r2=1.14.2.3
- http://proftp.cvs.sourceforge.net/viewvc/proftp/proftpd/contrib/mod_sftp/packet.h?r1=1.3&r2=1.3.2.1
- http://secunia.com/advisories/43234
- http://secunia.com/advisories/43635
- http://secunia.com/advisories/43978
- http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.485806
- http://www.debian.org/security/2011/dsa-2185
- http://www.exploit-db.com/exploits/16129/
- http://www.securityfocus.com/bid/46183
- http://www.vupen.com/english/advisories/2011/0617
- http://www.vupen.com/english/advisories/2011/0857
- https://bugzilla.redhat.com/show_bug.cgi?id=681718