bugGNU cpio - Bugs: bug #43709, Out-of-bounds write in...

 
 

bug #43709: Out-of-bounds write in process_copy_in (CVE-2014-9112)

Submitted by:  Florian Weimer <fweimer>
Submitted on:  Thu 27 Nov 2014 08:43:38 AM UTC  
 
Category:  None Severity:  3 - Normal
Item Group:  None Status:  Fixed
Privacy:  Public Assigned to:  Sergey Poznyakoff <gray>
Open/Closed:  Closed

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Thu 27 Nov 2014 08:43:38 AM UTC, original submission:

It was reported that in process_copy_in has an out-of-bounds heap write:

646 link_name = (char *) xmalloc ((unsigned int) file_hdr->c_filesize + 1);
647 link_name[file_hdr->c_filesize] = '\0';

file_hdr->c_filesize can be (unsigned) -1, so it wraps around 0, and the subsequent assignment writes outside the allocated memory area.

(Via <http://thread.gmane.org/gmane.comp.security.fulldisclosure/1238>.)

This has been assigned CVE-2014-9112.

Florian Weimer <fweimer>

 

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    Follow 3 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2016-11-10 gray StatusNone => Fixed
        Assigned toNone => gray
        Open/ClosedOpen => Closed

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