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List:       bugtraq
Subject:    GLSA: glibc (update)
From:       Daniel Ahlberg <aliz () gentoo ! org>
Date:       2002-09-27 10:34:24
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GENTOO LINUX SECURITY ANNOUNCEMENT
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PACKAGE        :glibc
SUMMARY        :division by zero
DATE           :2002-09-27 10:00 UTC

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Wolfram Gloger discovered that the sunrpc overflow bugfix unintentially
replaced potential integer overflows in connection with malloc() with
more likely divisions by zero.

DETAIL

The XDR (external data representation) libraries are used to provide
platform-independent methods for sending data from one system process to
another, typically over a network connection. Such routines are commonly
used in remote procedure call (RPC) implementations to provide transparency 
to application programmers who need to use common interfaces to interact 
with many different types of systems. The xdr_array() function in the XDR 
library provided by Sun Microsystems contains an integer overflow that can 
lead to improperly sized dynamic memory allocation. Subsequent problems like 
buffer overflows may result, depending on how and where the vulnerable 
xdr_array() function is used.

More information can be found at:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCAN-2002-0391
http://www.kb.cert.org/vuls/id/192995

SOLUTION

It is recommended that all Gentoo Linux users who are running
sys-libs/glibc-2.2.5-r6 and earlier update their systems
as follows:

emerge rsync
emerge glibc
emerge clean

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aliz@gentoo.org - GnuPG key is available at www.gentoo.org/~aliz
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