ProFTPD CIDR entry ACL bypass
| proftpd-cidr-acl-bypass (16038) |  Medium Risk |
Description:
ProFTPD could allow a remote attacker to bypass Access Control Lists (ACL). If an ACL entry is CIDR (Classless Inter Domain Routing)-based, it will function as an AllowAll directive, which could allow a remote attacker to bypass the ACL.
Consequences:
Bypass Security
Remedy:
Upgrade to the latest version of ProFTPD (1.2.10rc1 or later), available from the ProFTPD Web page. See References.
For OpenPKG:
Refer to OpenPKG Security Advisory OpenPKG-SA-2004.018 for patch, upgrade, or suggested workaround information. See References.
References:
- ProFTPD Web page: Bug 2267 - Broken IP subnet matching.
- BID-10252: ProFTPD CIDR Access Control Rule Bypass Vulnerability
- CVE-2004-0432: ProFTPD 1.2.9 treats the Allow and Deny directives for CIDR based ACL entries as if they were AllowAll, which could allow FTP clients to bypass intended access restrictions.
- GLSA-200405-09: ProFTPD Access Control List bypass vulnerability
- MDKSA-2004:041: Updated ProFTPD packages fix vulnerability
- OpenPKG-SA-2004.018: ProFTPD
- SA11527: ProFTPD CIDR Addressing ACL and "site chgrp" Security Issues
Platforms Affected:
- Gentoo Linux
- OpenPKG OpenPKG 1.3
- OpenPKG OpenPKG 2.0
- OpenPKG OpenPKG CURRENT
- ProFTPD ProFTPD 1.2.9
- Turbolinux Turbolinux 10 Server
- Turbolinux Turbolinux Appliance Server 2.0
Reported:
May 03, 2004
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