Bugzilla will be upgraded to version 5.0 on a still to be determined date in the near future. The original upgrade date has been delayed.
First Last Prev Next    This bug is not in your last search results.
Bug 1223341 - (CVE-2015-4035) CVE-2015-4035 xzgrep: incorrect parsing of filenames containing a semicolon
CVE-2015-4035 xzgrep: incorrect parsing of filenames containing a semicolon
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
: ---
: ---
Assigned To: Red Hat Product Security
impact=moderate,public=20150518,repor...
: Security
Depends On:
Blocks: 1223342
  Show dependency tree / graph
 
Reported: 2015-05-20 07:28 EDT by Martin Prpič
Modified: 2015-06-04 06:00 EDT (History)
3 users (show)

See Also:
Fixed In Version: xz 5.0.0, xz 5.2.0
Doc Type: Bug Fix
Doc Text:
It was discovered that the xzgrep's xz helper script did not properly sanitize certain file names. A local attacker could use this flaw to inject and execute arbitrary commands by tricking a user into running the xzgrep script on a file with a specially crafted file name.
Story Points: ---
Clone Of:
Environment:
Last Closed:
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

  None (edit)
Description Martin Prpič 2015-05-20 07:28:21 EDT 
It was found that xzgrep did not correctly process file names containing a semicolon. A local attacker able to trick a user to run xzgrep on a specially crafted file could use this flaw to execute arbitrary code as the user running xzgrep.

$ touch /tmp/semi\;colon
$ xzgrep anystring /tmp/semi\;colon 
xz: /tmp/semi: No such file or directory
/usr/bin/xzgrep: line 199: colon: command not found

Additional details:

http://seclists.org/oss-sec/2015/q2/484
Comment 2 Stefan Cornelius 2015-06-03 03:11:00 EDT 
Statement:

This issue affects the versions of xz as shipped with Red Hat Enterprise Linux 5 and 6. Red Hat Product Security has rated this issue as having Moderate security impact. A future update may address this issue. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
Note You need to log in before you can comment on or make changes to this bug.
First Last Prev Next    This bug is not in your last search results.