Bug 155746 - CAN-2005-0988 Race condition in gzip
CAN-2005-0988 Race condition in gzip
Status: CLOSED CURRENTRELEASE
Product: Fedora
Classification: Fedora
Component: gzip (Show other bugs)
3
All Linux
medium Severity low
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Assigned To: Ivana Varekova
Ben Levenson
impact=low,public=20050404,source=bug...
: Security
Depends On:
Blocks:
  Show dependency treegraph
 
Reported: 2005-04-22 14:22 EDT by Josh Bressers
Modified: 2007-11-30 17:11 EST (History)
1 user (show)

See Also:
Fixed In Version: 1.3.3-15
Doc Type: Bug Fix
Doc Text:
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Clone Of:
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Last Closed: 2005-09-05 03:20:55 EDT
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RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)
Used patch (1.62 KB, patch)
2005-04-26 08:48 EDT, Ivana Varekova
no flags Details | Diff

  None (edit)
Description Josh Bressers 2005-04-22 14:22:24 EDT
+++ 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 08:48:58 EDT
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 15:56:55 EDT
"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 06:19:18 EDT
fc3 package is built now (gzip-1.3.3-14.fc3).
Comment 4 Michal Jaegermann 2005-06-17 15:53:34 EDT
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 07:57:59 EDT
fc3 package with CAN-2005-0758 (bug 121514) - patch is built now
(gzip-1.3.3-15.fc3).

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