Wu-ftpd MAPPING_CHDIR overflow could allow remote root access
| wu-ftpd-dir-name (3158) |  High Risk |
Description:
Wu-ftpd is vulnerable to a buffer overflow caused by improper bounds checking of directory names supplied by users when the server is compiled to use the MAPPING_CHDIR feature. A remote attacker with the ability to create directories can overflow a buffer and overwrite static memory space to execute arbitrary code on the system with root privileges.
Consequences:
Gain Access
Remedy:
For FreeBSD 3.2 and earlier:
Upgrade to the latest version of wu-ftpd (3.3-released dated after 1999-08-30 or later), as listed in FreeBSD Security Advisory FreeBSD-SA-99:03. See References.
References:
- AusCERT Advisory AA-99.01: wu-ftpd/BeroFTPD MAPPING_CHDIR Vulnerability.
- BugTraq Mailing List, Thu, 26 Aug 1999 13:43:07 -0400: WU-FTPD Security Update.
- Caldera International, Inc. Security Advisory CSSA-1999-027.0: buffer overflow in wu-ftpd-2.5.
- CERT Advisory CA-1999-13: Multiple Vulnerabilities in WU-FTPD.
- CIAC Information Bulletin J-065: Wu-ftpd Vulnerability.
- FreeBSD Security Advisory FreeBSD-SA-99:03: Three ftp daemons in ports vulnerable to attack..
- RHSA-1999:031-01: Another buffer overflow in wu-ftpd is fixed.
- RHSA-1999:043-01: Security problems in WU-FTPD.
- BID-599: Multiple Vendor Wu-Ftpd Buffer Overflow Vulnerability
- CVE-1999-0878: Buffer overflow in WU-FTPD and related FTP servers allows remote attackers to gain root privileges via MAPPING_CHDIR.
Platforms Affected:
- Beroftpd BeroFTPd 1.3.2
- Beroftpd BeroFTPd 1.3.3
- Beroftpd BeroFTPd 1.3.4
- Washington University WU-FTPD 2.4.2 Beta18 VR10
- Washington University WU-FTPD 2.4.2 Beta18 VR11
- Washington University WU-FTPD 2.4.2 Beta18 VR12
- Washington University WU-FTPD 2.4.2 Beta18 VR13
- Washington University WU-FTPD 2.4.2 Beta18 VR14
- Washington University WU-FTPD 2.4.2 Beta18 VR15
- Washington University WU-FTPD 2.4.2 Beta18 VR4
- Washington University WU-FTPD 2.4.2 Beta18 VR5
- Washington University WU-FTPD 2.4.2 Beta18 VR6
- Washington University WU-FTPD 2.4.2 Beta18 VR8
- Washington University WU-FTPD 2.4.2 Beta18 VR9
- Washington University WU-FTPD 2.4.2 VR16
- Washington University WU-FTPD 2.4.2 VR17
- Washington University WU-FTPD 2.5
Reported:
Aug 26, 1999
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