Bug 236238 - (CVE-2007-2348) CVE-2007-2348 lftp mirror --script does not escape names and targets of symbolic links
CVE-2007-2348 lftp mirror --script does not escape names and targets of symbo...
Status: CLOSED WONTFIX
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
low Severity low
: ---
: ---
Assigned To: Red Hat Product Security
http://lftp.yar.ru/news.html
public=20070109,reported=20070405,sou...
: Security
Depends On: 239334
Blocks:
  Show dependency treegraph
 
Reported: 2007-04-12 12:45 EDT by Red Hat Product Security
Modified: 2011-08-01 14:46 EDT (History)
3 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Environment:
Last Closed: 2011-08-01 14:46:53 EDT
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---


Attachments (Terms of Use)

  None (edit)
Description Lubomir Kundrak 2007-04-12 12:45:54 EDT
Description of problem:

Does not escape names of symlinks when producing a script to be
passed to the shell, which could be abused by an attacked to
trick the user into executing arbitrary code with crafted symbolic
link.

Version-Release number of selected component (if applicable):

        Doesn't Affect: RHEL2.1 no support for --script
        Doesn't Affect: RHEL3 ditto
        Affects: RHEL4
        Affects: RHEL5
        Affects: FC5
        Affects: FC6

Steps to Reproduce:
1. ln -s '$(touch /tmp/gotya; echo kwak)' malicious
2. serve that file via ftp and attempt to download it with lftp via mirror --script
3. Try to run the resulting script with lftp -f
  
Actual results:

The downloaded file will point to "kwak", while file /tmp/gotya will be
created.

Additional info:

The security implications are questionable, as is the usefullness of the
--script feature itself.
Comment 4 errata-xmlrpc 2009-09-02 05:37:46 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2009:1278 https://rhn.redhat.com/errata/RHSA-2009-1278.html
Comment 5 errata-xmlrpc 2009-09-02 08:09:28 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2009:1278 https://rhn.redhat.com/errata/RHSA-2009-1278.html
Comment 6 Red Hat Bugzilla 2009-10-23 15:03:34 EDT
Reporter changed to security-response-team@redhat.com by request of Jay Turner.
Comment 7 Josh Bressers 2011-08-01 14:18:22 EDT
Statement:

This issue does not affect lftp as supplied with Red Hat Enterprise Linux 3.

This issue was addressed for Red Hat Enterprise Linux 5 by
https://rhn.redhat.com/errata/RHSA-2009-1278.html

The Red Hat Security Response Team has rated this issue as having low security impact, this issue will not fixed in Red Hat Enterprise Linux 4.

Note You need to log in before you can comment on or make changes to this bug.