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Hash: SHA1 |
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GENTOO LINUX SECURITY ANNOUNCEMENT |
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|
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PACKAGE :mpack |
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SUMMARY :remote buffer overflow |
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DATE :2002-08-02 12:15 UTC |
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OVERVIEW |
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|
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A buffer overflow in the munpack program causes the program to crash |
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and might also be used to run arbitary code. |
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|
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There also exist a second vulnerability that affects malformed |
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filenams. |
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|
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DETAIL |
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|
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- From Debian Security Advisory DSA 141-1: |
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|
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Eckehard Berns discovered a buffer overflow in the munpack program |
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which is used for decoding (respectively) binary files in MIME |
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(Multipurpose Internet Mail Extensions) format mail messages. If |
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munpack is run on an appropriately malformed email (or news article) |
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then it will crash, and perhaps can be made to run arbitrary code. |
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|
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Herbert Xu reported a second vulnerability which affected malformed |
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filenames that refer to files in upper directories like "../a". The |
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security impact is limited, though, because only a single leading |
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"../" was accepted and only new files can be created (i.e. no files |
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will be overwritten). |
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|
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The full Debian Security Advisory can be read at |
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http://security.debian.org |
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NOTE: The DSA was not uploaded at the time when this |
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advisory was written. |
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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 update their systems as |
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follows. |
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|
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emerge rsync |
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emerge mpack |
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emerge clean |
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|
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Daniel Ahlberg |
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aliz@g.o |
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