Bug 98328 - CAN-2003-0282 vulnerability in unzip 5.50 allows malicious zip file to write to ../
Summary: CAN-2003-0282 vulnerability in unzip 5.50 allows malicious zip file to write...
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 2.1
Classification: Red Hat
Component: unzip   
(Show other bugs)
Version: 2.1
Hardware: All Linux
medium
medium
Target Milestone: ---
Assignee: Lon Hohberger
QA Contact: Ben Levenson
URL:
Whiteboard:
Keywords: Security
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2003-07-01 08:47 UTC by Mark J. Cox
Modified: 2007-11-30 22:06 UTC (History)
0 users

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Environment:
Last Closed: 2003-07-01 15:24:27 UTC
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---


Attachments (Terms of Use)


External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2003:200 low SHIPPED_LIVE Moderate: unzip security update 2003-07-01 04:00:00 UTC

Description Mark J. Cox 2003-07-01 08:47:18 UTC
Description of problem:
By inserting non-printable characters into a directory, for instance:

^C../

One may create a zip file which, when extracted, will bypass the "writing to
../" security check (if the user has not specified the "-:" command line
option), thus opening up the potential for a trojan horse program:

^C../^C../^C../^C../usr/sbin/sshd

for example.

Version-Release number of selected component (if applicable):
5.50-*

How reproducible:
Always

Steps to Reproduce: Unzip the attached testcase.zip.
Actual Results:  Stuff created in parent directory (../) without the -: option.
Expected Results:  Stuff created in current directory.

Comment 1 Lon Hohberger 2003-07-01 14:48:27 UTC
Awaiting erratum.

Comment 2 Mark J. Cox 2003-07-01 15:24:27 UTC
An errata 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.

http://rhn.redhat.com/errata/RHSA-2003-200.html



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