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Category:   Application (Generic)  >   Tar Vendors:   GNU [multiple authors]
libtar Integer Overflow Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1029166
SecurityTracker URL:  http://securitytracker.com/id/1029166
CVE Reference:   CVE-2013-4397   (Links to External Site)
Date:  Oct 10 2013
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): libtar 1.2.19 and prior
Description:   A vulnerability was reported in libtar. A remote or local user can cause arbitrary code to be executed on the target user's system.

A remote user can create a specially crafted tar file that, when extracted by the target user or application, will trigger an integer overflow and execute arbitrary code on the target system. The code will run with the privileges of the target user or application.

Timo Warns reported this vulnerability.

Impact:   A remote user can create a file that, when extracted by the target user or application, will execute arbitrary code on the target system.
Solution:   The vendor has issued a fix (1.2.20).
Vendor URL:  www.feep.net/libtar/ (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Oct 10 2013 (Red Hat Issues Fix) libtar Integer Overflow Lets Remote Users Execute Arbitrary Code
Red Hat has issued a fix for Red Hat Enterprise Linux 6.



 Source Message Contents

Subject:  [oss-security] Integer overflow in libtar (<= 1.2.19)

Hi All,

Forwarding information from the linux-distros list to oss-sec, since
the issue is public now

Details:

An integer overflow vulnerability was identified in libtar 1.2.19 (and
olders) that can possibly be exploited for arbitrary code execution when
extracting a specially crafted tar file.

A coordinated release date (CRD) of October 9th has been agreed with
Chris Frey (libtar developer).

This issue is assigned CVE-2013-4397.
This issue is fixed in libtar-1.2.20

Reference:

Upstream patch:
http://repo.or.cz/w/libtar.git/commit/45448e8bae671c2f7e80b860ae0fc0cedf2bdc04

Announcement: This is an announcement about the release on
libtar list, but strangely i cant access the list archives.
(i am subscribed to the mailing list though)

Red Hat bugzilla:
https://bugzilla.redhat.com/show_bug.cgi?id=1014492

-- 
Huzaifa Sidhpurwala / Red Hat Security Response Team
 
 


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