18063 : KDE Kate/KWrite Backup File Insecure Permission Information Disclosure
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Views This Week
3

Views All Time
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Info

Last Modified
5 months ago

Percent Complete
100%

Disclosure
Apr 06, 2005

Discovery
Unknown

Dates

Exploit
Apr 06, 2005

Solution
Unknown

Description

 Kate/KWrite create a file backup before saving a modified file. These backup files are created with default permissions (as set by umask), even if the original file had more strict permissions set. Depending on system setup, relaxed permissions may make the backup file readable to users who would not have read permission to the original file. Kate/KWrite are network transparent, therefore this disclosure might not be limited to local users.

Classification

 Location: Local Access Required
Attack Type: Information Disclosure, Race Condition
Impact: Loss of Confidentiality
Exploit: Exploit Available
Disclosure: OSVDB Verified

Solution

 Upgrade to KDE version 3.4.1 or higher, as it has been reported to fix this vulnerability. Code patches are provided by KDE for all vulnerable versions.
Contact your OS vendor / binary package provider for information about how to obtain updated binary packages.

Products
KDE Project
Watch-list
K Desktop Environment
Watch-list
 3.2.x
3.3.x
3.4.0

References

Tools & Filters

Nessus

 19230 19265 19332 19338 19611 20548 23729

Manual Testing Notes

Credit
  • - bjoernBrand New Doo Doocs.tu-berlin.de -

Blogs

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Comments

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Anonymous - 2006/05/18 02:17:46

I still see this problem on Kate 3.4.3, Ubuntu 5.10. It may happened when I played around a month ago with umask and others, as I dont completely understand the whole concept of having users in one group and make all files rw by all members of this group. At least now as executable marked files are cleared after saving the file, which is not a security problem but a nuisance.

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