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buffer overflow detected in xymongen (4.3.21)

list Axel Beckert
Fri, 2 Oct 2015 13:58:46 +0200
Message-Id: <user-5d497ce74887@xymon.invalid>

Hi,

On Fri, Oct 02, 2015 at 01:32:51PM +0200, Axel Beckert wrote:
Today it finally crashed again after I deployed the debug
packages. (It's seldom that I'm so happy to see a core dump. ;-)

Here's the [...] oldest one:
[...]
It's indeed in the WML generation code, should be this line here:
https://sources.debian.net/src/xymon/4.3.21-1/xymongen/wmlgen.c/#L150
Looking at what status changed in the five minutes before the crash I
found two status reports which had each line lengths of 6576 and 6897
characters, but both far shorter than the MAX_LINE_LEN of 16384
characters

Another thing I could imagine are lines with no trailing newline at
the end. But then again I have no idea where they could come from nor
how I should look for them.

		Kind regards, Axel Beckert
-- 
Axel Beckert <user-96d9963fe797@xymon.invalid>       support: +41 44 633 26 68
IT Services Group, HPT H 6                  voice: +41 44 633 41 89
Departement of Physics, ETH Zurich
CH-8093 Zurich, Switzerland		   http://nic.phys.ethz.ch/