USN-75-1: cpio vulnerability
Posted on: 02/04/2005 04:03 PM

A cpio security update is available for Ubuntu Linux

Ubuntu Security Notice USN-75-1 February 04, 2005
cpio vulnerability

A security issue affects the following Ubuntu releases:

Ubuntu 4.10 (Warty Warthog)

The following packages are affected:


The problem can be corrected by upgrading the affected package to version 2.5-1.1ubuntu0.1. In general, a standard system upgrade is sufficient to effect the necessary changes.

Details follow:

Recently it was discovered that cpio created world-writeable files when used in -o/--create mode with giving an output file (with -O). This allowed any user to modify the created cpio archives. Now cpio respects the current umask setting of the user.

Note: This vulnerability has already been fixed in a very old version of cpio, but the fix was never ported to the current version. Therefore the CAN number was assigned to the year 1999.

Source archives:
Size/MD5: 26221 3ca615bf2f07f822aeed0f0a7261b189
Size/MD5: 551 608c00fb079a716aaa0cd22ecb3481b0
Size/MD5: 185480 e02859af1bbbbd73fcbf757acb57e0a4

amd64 architecture (Athlon64, Opteron, EM64T Xeon)
Size/MD5: 68180 4a4263672519f5b84d251ea80c7647cb

i386 architecture (x86 compatible Intel/AMD)
Size/MD5: 63608 a2c9334648f310639fc23b641abf81c0

powerpc architecture (Apple Macintosh G3/G4/G5)
Size/MD5: 67190 0e150800f5b5b95f2c1d6516138c3c0c

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