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-----BEGIN PGP SIGNED MESSAGE----- |
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Hash: SHA1 |
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GENTOO LINUX SECURITY ANNOUNCEMENT |
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PACKAGE :glibc |
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SUMMARY :integer overflow |
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DATE :2002-09-05 11:00 UTC |
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OVERVIEW |
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|
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There is an integer overflow present in the xdr_array() function distributed |
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as part of the Sun Microsystems XDR library. This overflow has been shown to |
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lead to remotely exploitable buffer overflows in multiple applications, |
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leading to the execution of arbitrary code. Although the library was |
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originally distributed by Sun Microsystems, multiple vendors have included |
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the vulnerable code in their own implementations. |
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|
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DETAIL |
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|
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The XDR (external data representation) libraries are used to provide |
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platform-independent methods for sending data from one system process to |
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another, typically over a network connection. Such routines are commonly used |
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in remote procedure call (RPC) implementations to provide transparency to |
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application programmers who need to use common interfaces to interact with |
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many different types of systems. The xdr_array() function in the XDR library |
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provided by Sun Microsystems contains an integer overflow that can lead to |
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improperly sized dynamic memory allocation. Subsequent problems like buffer |
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overflows may result, depending on how and where the vulnerable xdr_array() |
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function is used. |
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|
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More information can be found at: |
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|
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0391 |
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http://www.kb.cert.org/vuls/id/192995 |
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|
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SOLUTION |
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|
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It is recommended that all Gentoo Linux users who are running |
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sys-libc/glibc-2.2.5-r5 and earlier update their systems |
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as follows: |
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|
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emerge rsync |
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emerge glibc |
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emerge clean |
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|
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aliz@g.o - GnuPG key is available at www.gentoo.org/~aliz |
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