Red Hat Bugzilla – Bug 172865
CVE-2005-4268 cpio large filesize buffer overflow
Last modified: 2007-11-30 17:07:21 EST
+++ This bug was initially created as a clone of Bug #172669 +++
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Description of problem:
The latest update to cpio is being killed after a buffer overflow is detected.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
cpio is given a large hierarchy of files and started using "cpio -o --format=crc"
-- Additional comment from firstname.lastname@example.org on 2005-11-10 09:03 EST --
file_hdr->c_ino, file_hdr->c_mode, file_hdr->c_uid,
file_hdr->c_gid, file_hdr->c_nlink, file_hdr->c_mtime,
file_hdr->c_filesize, file_hdr->c_dev_maj, file_hdr->c_dev_min,
file_hdr->c_rdev_maj, file_hdr->c_rdev_min, file_hdr->c_namesize,
cpio assumes the filesize is at most 8 digits in size... and that's not right.
If it's more, this buffer will indeed overflow....
this probably wants to use asprintf() or so
-- Additional comment from email@example.com on 2005-11-10 13:07 EST --
Please note that this is only a security issue on 64 bit platforms.
This issue should also affect RHEL2.1 and RHEL3
Created attachment 130020 [details]
patch extracted from upstream
This patch could fix also #183224, but it's necessary to rewrite
Than there will be 3 issues addressed:
cpio will be able to archive files <8GB in odc format.(no bz report for this)
Is it possible to do these changes? Everything is tested and works in FC-5. I'd
like to do it at once to avoid any other problem which come if only
writeOutHeaderBufferOverflow.patch is applied
QE ack for 4.5.
+ static char codetab = "0123456789ABCDEF";
Should have const in that line.
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.