Bug 212056 (CVE-2006-4573) - CVE-2006-4573 screen buffer overflow
Summary: CVE-2006-4573 screen buffer overflow
Alias: CVE-2006-4573
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Marcela Mašláňová
QA Contact: Brock Organ
URL: http://lists.gnu.org/archive/html/scr...
Depends On:
TreeView+ depends on / blocked
Reported: 2006-10-24 19:41 UTC by Josh Bressers
Modified: 2021-02-25 18:36 UTC (History)
0 users

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2007-08-09 15:12:00 UTC

Attachments (Terms of Use)

Description Josh Bressers 2006-10-24 19:41:34 UTC
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:


    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 likely affects RHEL2.1 and RHEL3

Comment 2 Marcela Mašláňová 2006-12-11 12:38:30 UTC
Solved in rawhide.

Comment 3 Marcela Mašláňová 2007-03-28 11:07:25 UTC
New version, fix bugs from comment#1

Comment 4 Marcela Mašláňová 2007-08-09 15:12:00 UTC
Please update on screen-4.0.3 and higher.

Comment 5 Josh Bressers 2011-08-02 18:32:12 UTC

Red Hat no longer plans to fix this issue in Red Hat Enterprise Linux 4.

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