CVE-2003-0466

Description

Off-by-one error in the fb_realpath() function, as derived from the realpath function in BSD, may allow attackers to execute arbitrary code, as demonstrated in wu-ftpd 2.5.0 through 2.6.2 via commands that cause pathnames of length MAXPATHLEN+1 to trigger a buffer overflow, including (1) STOR, (2) RETR, (3) APPE, (4) DELE, (5) MKD, (6) RMD, (7) STOU, or (8) RNTO.

CVSS breakdown

Affected products

• Apple / mac_os_x10.2.6 – 10.2.6
• Apple / mac_os_x_server10.2.6 – 10.2.6
• FreeBSD / FreeBSD4.0 – 5.0
• NetBSD / netbsd1.5 – 1.6.1
• OpenBSD / OpenBSD2.0 – 3.3
• RedHat / wu_ftpd2.6.1-16 – 2.6.1-16
• sun / solaris9.0 – 9.0
• wuftpd / wu-ftpd2.5.0 – 2.6.2

Exploits & proofs of concept

• exploit-dbWU-FTPD 2.6.2 - Remote Command Executionby Xpl017Elz
• exploit-dbWU-FTPD 2.6.0/2.6.1/2.6.2 - 'realpath()' Off-by-One Buffer Overflowby Xpl017Elz
• exploit-dbWU-FTPD 2.6.2 - Off-by-One Remote Command Executionby Xpl017Elz
• exploit-dbWU-FTPD 2.6.2 - 'realpath()' Off-by-One Buffer Overflowby Xpl017Elz
• exploit-dbFreeBSD 4.8 - 'realpath()' Off-by-One Buffer Overflowby daniels@legend.co.uk

References

• MAILING_LISThttp://marc.info/?l=bugtraq&m=106002488209129&w=2
• MISChttp://isec.pl/vulnerabilities/isec-0011-wu-ftpd.txt
• VENDOR_ADVISORYhttp://secunia.com/advisories/9446
• MISChttp://www.osvdb.org/6602
• MISChttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1970
• MISChttp://www.securityfocus.com/archive/1/424852/100/0/threaded
• MISChttp://www.securityfocus.com/bid/8315
• VENDOR_ADVISORYhttp://secunia.com/advisories/9423
• MAILING_LISThttp://marc.info/?l=bugtraq&m=105967301604815&w=2
• MISChttp://archives.neohapsis.com/archives/vulnwatch/2003-q3/0065.html
• MISChttp://download.immunix.org/ImmunixOS/7+/Updates/errata/IMNX-2003-7+-019-01
• MISChttp://www.redhat.com/support/errata/RHSA-2003-246.html
• MISChttp://www.securityfocus.com/archive/1/425061/100/0/threaded
• MISChttp://www.kb.cert.org/vuls/id/743092
• MISChttp://www.redhat.com/support/errata/RHSA-2003-245.html
• VENDOR_ADVISORYhttp://www.novell.com/linux/security/advisories/2003_032_wuftpd.html
• MISChttp://sunsolve.sun.com/search/document.do?assetkey=1-77-1001257.1-1
• VENDOR_ADVISORYhttp://www.debian.org/security/2003/dsa-357
• MAILING_LISThttp://marc.info/?l=bugtraq&m=106001702232325&w=2
• MISChttp://securitytracker.com/id?1007380
• VENDOR_ADVISORYhttp://www.mandriva.com/security/advisories?name=MDKSA-2003:080
• MISChttps://exchange.xforce.ibmcloud.com/vulnerabilities/12785
• MAILING_LISThttp://marc.info/?l=bugtraq&m=106001410028809&w=2
• MISChttp://www.turbolinux.com/security/TLSA-2003-46.txt
• VENDOR_ADVISORYftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2003-011.txt.asc
• VENDOR_ADVISORYhttp://secunia.com/advisories/9535
• VENDOR_ADVISORYhttp://secunia.com/advisories/9447