Bug 141185 - CAN-2004-1079 ncpfs buffer overflow.
CAN-2004-1079 ncpfs buffer overflow.
Product: Fedora
Classification: Fedora
Component: ncpfs (Show other bugs)
All Linux
medium Severity high
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Assigned To: Jiri Ryska
David Lawrence
: Security
Depends On:
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Reported: 2004-11-29 15:07 EST by Josh Bressers
Modified: 2007-11-30 17:10 EST (History)
0 users

See Also:
Fixed In Version: ncpfs-2.2.4-4.FC3.1
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2005-06-20 08:03:52 EDT
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RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Josh Bressers 2004-11-29 15:07:00 EST
Taken from

There is buffer overflow in ncplogin and ncpmap in nwclient.c.

static void strcpy_cw(wchar_t *w, const char* s) {
~        while ((*w++ = *(const nuint8*)s++) != 0);

NWDSCCODE NWDSCreateContextHandleMnt(NWDSContextHandle* ctx, const
NWDSChar * treeName){
wchar_t wc_treeName[MAX_DN_CHARS+1];

~  if (!treeName)
~      return ERR_NULL_POINTER;

~  strcpy_cw (wc_treeName,treeName);

Currently i have not managed to successfully exploit this bug on x86.

How to reproduce :

ncplogin -T `perl -e '{print"a"x"330"}'`
ncpmap -T `perl -e '{print"a"x"330"}'` /

This issue also affects FC2.
Comment 1 Josh Bressers 2004-12-06 10:24:26 EST
Ping on this issue.
Comment 2 Mark J. Cox 2005-06-02 06:12:38 EDT
Needs update pushing for FC3

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