CVE-2003-0466
highpriority · attend · 76EPSS 0.781 · 100 %ileexploit · functionalEURUUSEPSS · scored 2026-10-23
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.
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
A vendor fix is available.
- FixedRed Hat Linux 7.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. To update all RPMs for your particular architecture, run: rpm -Fvh [filenames] where [filenames] is a list of the RPMs you wish to upgrade. Only those RPMs which are currently installed will be updated. Those RPMs which are not installed but included in the list will not be updated. Note that you can also use wildcards (*.rpm) if your current directory *only* contains the desired RPMs. Please note that this update is also available via Red Hat Network. Many people find this an easier way to apply updates. To use Red Hat Network, launch the Red Hat Update Agent with the following command: up2date This will start an interactive process that will result in the appropriate RPMs being upgraded on your system.
https://access.redhat.com/errata/RHSA-2003:245 - FixedRed Hat Linux 7.2redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. To update all RPMs for your particular architecture, run: rpm -Fvh [filenames] where [filenames] is a list of the RPMs you wish to upgrade. Only those RPMs which are currently installed will be updated. Those RPMs which are not installed but included in the list will not be updated. Note that you can also use wildcards (*.rpm) if your current directory *only* contains the desired RPMs. Please note that this update is also available via Red Hat Network. Many people find this an easier way to apply updates. To use Red Hat Network, launch the Red Hat Update Agent with the following command: up2date This will start an interactive process that will result in the appropriate RPMs being upgraded on your system.
https://access.redhat.com/errata/RHSA-2003:245 - FixedRed Hat Linux 7.3redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. To update all RPMs for your particular architecture, run: rpm -Fvh [filenames] where [filenames] is a list of the RPMs you wish to upgrade. Only those RPMs which are currently installed will be updated. Those RPMs which are not installed but included in the list will not be updated. Note that you can also use wildcards (*.rpm) if your current directory *only* contains the desired RPMs. Please note that this update is also available via Red Hat Network. Many people find this an easier way to apply updates. To use Red Hat Network, launch the Red Hat Update Agent with the following command: up2date This will start an interactive process that will result in the appropriate RPMs being upgraded on your system.
https://access.redhat.com/errata/RHSA-2003:245 - FixedRed Hat Linux 8.0redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. To update all RPMs for your particular architecture, run: rpm -Fvh [filenames] where [filenames] is a list of the RPMs you wish to upgrade. Only those RPMs which are currently installed will be updated. Those RPMs which are not installed but included in the list will not be updated. Note that you can also use wildcards (*.rpm) if your current directory *only* contains the desired RPMs. Please note that this update is also available via Red Hat Network. Many people find this an easier way to apply updates. To use Red Hat Network, launch the Red Hat Update Agent with the following command: up2date This will start an interactive process that will result in the appropriate RPMs being upgraded on your system.
https://access.redhat.com/errata/RHSA-2003:245 - FixedRed Hat Enterprise Linux AS (Advanced Server) version 2.1 redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. To update all RPMs for your particular architecture, run: rpm -Fvh [filenames] where [filenames] is a list of the RPMs you wish to upgrade. Only those RPMs which are currently installed will be updated. Those RPMs which are not installed but included in the list will not be updated. Note that you can also use wildcards (*.rpm) if your current directory *only* contains the desired RPMs. Please note that this update is also available via Red Hat Network. Many people find this an easier way to apply updates. To use Red Hat Network, launch the Red Hat Update Agent with the following command: up2date This will start an interactive process that will result in the appropriate RPMs being upgraded on your system.
https://access.redhat.com/errata/RHSA-2003:246 - FixedRed Hat Enterprise Linux ES version 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. To update all RPMs for your particular architecture, run: rpm -Fvh [filenames] where [filenames] is a list of the RPMs you wish to upgrade. Only those RPMs which are currently installed will be updated. Those RPMs which are not installed but included in the list will not be updated. Note that you can also use wildcards (*.rpm) if your current directory *only* contains the desired RPMs. Please note that this update is also available via Red Hat Network. Many people find this an easier way to apply updates. To use Red Hat Network, launch the Red Hat Update Agent with the following command: up2date This will start an interactive process that will result in the appropriate RPMs being upgraded on your system.
https://access.redhat.com/errata/RHSA-2003:246 - FixedRed Hat Linux Advanced Workstation 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. To update all RPMs for your particular architecture, run: rpm -Fvh [filenames] where [filenames] is a list of the RPMs you wish to upgrade. Only those RPMs which are currently installed will be updated. Those RPMs which are not installed but included in the list will not be updated. Note that you can also use wildcards (*.rpm) if your current directory *only* contains the desired RPMs. Please note that this update is also available via Red Hat Network. Many people find this an easier way to apply updates. To use Red Hat Network, launch the Red Hat Update Agent with the following command: up2date This will start an interactive process that will result in the appropriate RPMs being upgraded on your system.
https://access.redhat.com/errata/RHSA-2003:246
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 9.8–10
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (5)
Public proof-of-concept and weaponised exploit code.
- EDB-22974WU-FTPD 2.6.2 - 'realpath()' Off-by-One Buffer Overflowfunctional · exploit_db
- EDB-22975WU-FTPD 2.6.0/2.6.1/2.6.2 - 'realpath()' Off-by-One Buffer Overflowfunctional · exploit_db
- EDB-22976FreeBSD 4.8 - 'realpath()' Off-by-One Buffer Overflowfunctional · exploit_db
- EDB-74WU-FTPD 2.6.2 - Off-by-One Remote Command Executionfunctional · exploit_db
- EDB-78WU-FTPD 2.6.2 - Remote Command Executionfunctional · exploit_db
affected products (18)
Products and version ranges known to be affected.
- Red Hat Enterprise Linux AS (Advanced Server) version 2.1 all versionsfixedredhat_csafUScpe:/o:redhat:enterprise_linux:2.1::as
- Red Hat Enterprise Linux ES version 2.1all versionsfixedredhat_csafUScpe:/o:redhat:enterprise_linux:2.1::es
- Red Hat Linux Advanced Workstation 2.1all versionsfixedredhat_csafUScpe:/o:redhat:enterprise_linux:2.1::aw
advisories (2)
Vendor and ecosystem advisories describing this.
- RHSA-2003:245Red Hat Security Advisory: : Updated wu-ftpd packages fix remote vulnerability.2003-07-31csaf · redhat_csafUS
Updated wu-ftpd packages are now available that fix a remotely exploitable security issue.
- RHSA-2003:246Red Hat Security Advisory: wu-ftpd security update2003-07-31csaf · redhat_csafUS
Updated wu-ftpd packages are available that fix an off-by-one buffer overflow.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (52)
External citations — patches, advisories, analysis.
- http://archives.neohapsis.com/archives/vulnwatch/2003-q3/0065.htmlenisa_euvd
- http://download.immunix.org/ImmunixOS/7+/Updates/errata/IMNX-2003-7+-019-01enisa_euvd
- http://isec.pl/vulnerabilities/isec-0011-wu-ftpd.txtenisa_euvd
- http://marc.info/?l=bugtraq&m=105967301604815&w=2enisa_euvd
- http://marc.info/?l=bugtraq&m=106001410028809&w=2enisa_euvd
- http://marc.info/?l=bugtraq&m=106001702232325&w=2enisa_euvd
- http://marc.info/?l=bugtraq&m=106002488209129&w=2enisa_euvd
- http://secunia.com/advisories/9423enisa_euvd
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