Bugtraq mailing list archives
Re: Decompression Bombs
From: Bipin Gautam. <door_hunt3r () blackcodemail com>
Date: 10 Feb 2004 14:20:28 -0000
In-Reply-To: <7DB0958915FDD611961400A0C98F18464E8DB1 () WINTRIX thermeon com> I feel.. softwares should check the actual intrigity of data first... before extracting the archive insted completely trusting on the header information. [this will indeed show down the decompression process to some extent...] But, if the decompressor engines are used by Anti-virus softwarem... etc it should break the operation and insted list it in its error logs. but say, a file is stored in a disk and the disk cluster that hold the header info. of the archive gets corrupt! in that case..... the only way to recover the data would be to check the intrigity of the archive and recover! ---the only solution could be, ... using small digital signatures in the archive [say, something like public key of PGP] and only trusted archive should be opened trusting it's header... otherwise, the decompressor engines should check the real intrigity of data as well, before proceding further. ---- ... I do wanna know what are your views cauz, If you try to write a code to secure from such problems, it will certainly slow down a normal operation... [..I feel, soon the world will see digital certificates in JPG files (O; ] ---------------------------------------------------------------------
dd if=/dev/zero of=testfile count=10000&&gzip testfile&&ls -la testfileNo need to fill up your own disk -- do this instead: dd if=/dev/zero bs=1k count=10000 | gzip - > testfile.gz
Current thread:
- Decompression Bombs Matthias Leu (Feb 03)
- <Possible follow-ups>
- RE: Decompression Bombs David Bachtel (Feb 06)
- RE: Decompression Bombs Myron Davis (Feb 09)
- Re: Decompression Bombs Brian Dessent (Feb 09)
- Re: Decompression Bombs Myron Davis (Feb 11)
- Re: Decompression Bombs Chris Green (Feb 09)
- RE: Decompression Bombs Myron Davis (Feb 09)
- RE: Decompression Bombs SBNelson (Feb 09)
- Re: Decompression Bombs Bipin Gautam . (Feb 11)