Bug 212057 - CVE-2006-4573 screen buffer overflow
Summary: CVE-2006-4573 screen buffer overflow
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Fedora
Classification: Fedora
Component: screen
Version: 6
Hardware: All
OS: Linux
medium
low
Target Milestone: ---
Assignee: Marcela Mašláňová
QA Contact: Brock Organ
URL: http://lists.gnu.org/archive/html/scr...
Whiteboard: source=vendorsec,reported=20061023,im...
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2006-10-24 19:43 UTC by Josh Bressers
Modified: 2007-11-30 22:11 UTC (History)
1 user (show)

Fixed In Version: screen-4.0.3-1.fc6
Clone Of:
Environment:
Last Closed: 2006-12-11 14:06:18 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Josh Bressers 2006-10-24 19:43:59 UTC
+++ This bug was initially created as a clone of Bug #212056 +++

From the screen-users mailing list:

    I've just released screen-4.0.3. This is not the promised next version
    with vertical split and other cool things, but just a security release
    that fixes two bugs in the utf8 combining characters handling. The
    bugs could be used to crash/hang screen by writing a special string
    to a window.

    The fixed version is (as usual) available via:

    ftp://ftp.uni-erlangen.de/pub/utilities/screen/screen-4.0.3.tar.gz

    Credits go to cstone & Rich Felker for finding the bugs.

Kees Cook of Ubuntu analysed this issue and determined that it's likely an
exploitable issue, but it's non trivial to exploit.  This will require a fair
amount of user interaction to exploit, thus the low severity.

This issue also affects FC5

Comment 1 Marcela Mašláňová 2006-11-15 10:33:38 UTC
Now I make it for devel. I'll update FC-6 soon.


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