USN-104-1: unshar vulnerability
Posted on: 04/04/2005 09:05 AM

An unshar security update has been released for Ubuntu Linux

Ubuntu Security Notice USN-104-1 April 04, 2005
sharutils 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 1:4.2.1-10ubuntu0.2. In general, a standard system upgrade is sufficient to effect the necessary changes.

Details follow:

Joey Hess discovered that "unshar" created temporary files in an insecure manner. This could allow a symbolic link attack to create or overwrite arbitrary files with the privileges of the user invoking the program.

Source archives:
Size/MD5: 8181 7135804300d9a381cfebc2133e7239c2
Size/MD5: 634 1a16efd9010325d369909b608fb59597
Size/MD5: 306022 b8ba1d409f07edcb335ff72a27bd9828

Architecture independent packages:
Size/MD5: 28000 56cd083b2fbc3e689cb157a59c760f52

amd64 architecture (Athlon64, Opteron, EM64T Xeon)
Size/MD5: 113908 801afa19d2f272d22f7d13f5efb0a51a

i386 architecture (x86 compatible Intel/AMD)
Size/MD5: 110766 2d3e74efceff274a2bb4a17b3c4702b1

powerpc architecture (Apple Macintosh G3/G4/G5)
Size/MD5: 112656 1ce41914dde0c8d548f6bcc2d3a8fbd8

Printed from Linux Compatible (