Bug 155746 - CAN-2005-0988 Race condition in gzip
Summary: CAN-2005-0988 Race condition in gzip
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Fedora
Classification: Fedora
Component: gzip
Version: 3
Hardware: All
OS: Linux
medium
low
Target Milestone: ---
Assignee: Ivana Varekova
QA Contact: Ben Levenson
URL:
Whiteboard: impact=low,public=20050404,source=bug...
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2005-04-22 18:22 UTC by Josh Bressers
Modified: 2007-11-30 22:11 UTC (History)
1 user (show)

Fixed In Version: 1.3.3-15
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2005-09-05 07:20:55 UTC
Type: ---
Embargoed:

Attachments (Terms of Use)
Used patch (1.62 KB, patch)
2005-04-26 12:48 UTC, Ivana Varekova 		no flags Details | Diff
View All

Description Josh Bressers 2005-04-22 18:22:24 UTC 
+++ This bug was initially created as a clone of Bug #155745 +++

Race condition in gzip 1.2.4, 1.3.3, and earlier when decompressing a gzip
allows local users to modify permissions of arbitrary files via a hard link
attack on a file while it is being decompressed, whose permissions are changed
by gzip after the decompression is complete.

http://www.securityfocus.com/archive/1/394965
Comment 1 Ivana Varekova 2005-04-26 12:48:58 UTC 
Created attachment 113665 [details]
Used patch

I fixed this problem in devel (gzip-1.3.5-4). (I changed permissions and
ownership before output file is closed.)

Ivana Varekova
Comment 2 Michal Jaegermann 2005-06-16 19:56:55 UTC 
"CLOSED RAWHIDE" is absolutely of no help to all FC3 installations out there
with now a widely known open security issues. There were recent updates for RHEL.
See https://rhn.redhat.com/errata/RHSA-2005-357.html
Do you propose that everybody should recompile rawhide gzip rpms on their own?
Not that hard to do, but ....
Comment 3 Ivana Varekova 2005-06-17 10:19:18 UTC 
fc3 package is built now (gzip-1.3.3-14.fc3).
Comment 4 Michal Jaegermann 2005-06-17 19:53:34 UTC 
Sigh!  gzip-1.3.5-14.fc3 indeed closes CAN-2005-0988 and CAN-2005-1228
but CAN-2005-0758 (bug 121514) is still there.  That bug was fixed in
RHEL gzip updates and exactly the same fix showed up in bzgrep from
bzip2-1.0.2-13.FC3.1 released yesterday.  FC4 gzip packages also do not
sport that bug.
Comment 5 Ivana Varekova 2005-06-20 11:57:59 UTC 
fc3 package with CAN-2005-0758 (bug 121514) - patch is built now
(gzip-1.3.3-15.fc3).
Note You need to log in before you can comment on or make changes to this bug.