RE: [USN-45-1] nasm vulnerability

["Todd Towles" <toddtowles () brookshires com>]

So now, I just need to trick a user into running a malicious source file
that I assembed and sent him, this makes it much harder.

> -----Original Message-----
> From: full-disclosure-bounces () lists netsys com 
> [mailto:full-disclosure-bounces () lists netsys com] On Behalf 
> Of Martin Pitt
> Sent: Wednesday, December 22, 2004 4:53 AM
> To: ubuntu-security-announce () lists ubuntu com
> Cc: bugtraq () securityfocus com; full-disclosure () lists netsys com
> Subject: [Full-disclosure] [USN-45-1] nasm vulnerability
>
> ===========================================================
> Ubuntu Security Notice USN-45-1                 December 22, 2004
> nasm vulnerability
> CAN-2004-1287
> ===========================================================
>
> A security issue affects the following Ubuntu releases:
>
> Ubuntu 4.10 (Warty Warthog)
>
> The following packages are affected:
>
> nasm
>
> The problem can be corrected by upgrading the affected 
> package to version 0.98.38-1ubuntu0.1.  In general, a 
> standard system upgrade is sufficient to effect the necessary changes.
>
> Details follow:
>
> Jonathan Rockway discovered a locally exploitable buffer 
> overflow in the error() function of nasm. If an attacker 
> tricked a user into assembling a malicious source file, they 
> could exploit this to execute arbitrary code with the 
> privileges of the user that runs nasm.
>
>   Source archives:
>
>     
> http://security.ubuntu.com/ubuntu/pool/main/n/nasm/nasm_0.98.3
> 8-1ubuntu0.1.diff.gz
>       Size/MD5:     9013 69265719926bba4907e7da4df681324d
>     
> http://security.ubuntu.com/ubuntu/pool/main/n/nasm/nasm_0.98.3
> 8-1ubuntu0.1.dsc
>       Size/MD5:      598 b160f2ca70fc5bd4021c1e6e526eaf70
>     
> http://security.ubuntu.com/ubuntu/pool/main/n/nasm/nasm_0.98.3
> 8.orig.tar.gz
>       Size/MD5:   641727 9c1df91560651cbfaa73595fe6babb85
>
>   amd64 architecture (Athlon64, Opteron, EM64T Xeon)
>
>     
> http://security.ubuntu.com/ubuntu/pool/main/n/nasm/nasm_0.98.3
> 8-1ubuntu0.1_amd64.deb
>       Size/MD5:  1586664 2c76de8992b04548754487c9a2aa61dd
>
>   i386 architecture (x86 compatible Intel/AMD)
>
>     
> http://security.ubuntu.com/ubuntu/pool/main/n/nasm/nasm_0.98.3
> 8-1ubuntu0.1_i386.deb
>       Size/MD5:  1545538 a9c5d4e5a11f9c0c36a1deb5754eaf68
>
>   powerpc architecture (Apple Macintosh G3/G4/G5)
>
>     
> http://security.ubuntu.com/ubuntu/pool/main/n/nasm/nasm_0.98.3
> 8-1ubuntu0.1_powerpc.deb
>       Size/MD5:  1584374 540e0c417178d47713ca0cd60b7fc806

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