IMNX-2003-7+-019-01
Published: 2003-08-07 15:57:55
Updated: 2003-08-07 15:57:55
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Immunix Secured OS Security Advisory
Packages updated: wu-ftpd
Affected products: Immunix OS 7+
Bugs fixed: CAN-2003-0466
Date: Wed Aug 6 2003
Advisory ID: IMNX-2003-7+-019-01
Author: Seth Arnold <sarnold@immunix.com>
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Description:
Janusz Niewiadomski has discovered an off-by-one vulnerability in
wu-ftpd's fb_realpath function; this function is called with arguments
occasionally on the stack and occasionally statically allocated.
Therefore, StackGuard's protection should not be relied upon to
prevent exploitation of this vulnerability, though it may mitigate a
specific exploit, should one appear.
It is beleived this flaw is remotely exploitable. It is not known at
this time if the Immunix GLibC system library is vulnerable to a
similar flaw.
Immunix would like to thank Janusz for working with vendors to solve
this issue in a timely manner.
Package names and locations:
Precompiled binary packages for Immunix 7+ are available at:
http://download.immunix.org/ImmunixOS/7+/Updates/RPMS/wu-ftpd-2.6.1-6_imnx_8.i386.rpm
Immunix OS 7+ md5sums:
d1811ef4c936fa80f59cd0ce916acfa8 wu-ftpd-2.6.1-6_imnx_8.i386.rpm
GPG verification:
Our public key is available at http://download.immunix.org/GPG_KEY
NOTE:
Ibiblio is graciously mirroring our updates, so if the links above are
slow, please try:
ftp://ftp.ibiblio.org/pub/Linux/distributions/immunix/
or one of the many mirrors available at:
http://www.ibiblio.org/pub/Linux/MIRRORS.html
ImmunixOS 6.2 is no longer officially supported.
ImmunixOS 7.0 is no longer officially supported.
Contact information:
To report vulnerabilities, please contact security@immunix.com.
Immunix attempts to conform to the RFP vulnerability disclosure protocol
http://www.wiretrip.net/rfp/policy.html.
