Re: Question - Latest security alery of samba
On Sun, Mar 16, 2003 at 05:54:17PM +0200, Nir Livni wrote: > Any list of affected source files would be appreciated. I have replied to Nir privately off-list. Jeremy.
RE: Question - Latest security alery of samba
:-) I guess my only proof could be Jeremy. Jeremy knows me a bit. I gave him a little help with one of the latest fixes in 2.2.8 (delete on close). Appreciate your help, Nir Livni -Original Message- From: Richard Sharpe [mailto:[EMAIL PROTECTED] Sent: Sunday, March 16, 2003 8:06 PM To: Nir Livni Cc: [EMAIL PROTECTED] Subject: RE: Question - Latest security alery of samba On Sun, 16 Mar 2003, Nir Livni wrote: > I've read the announcement carefully. > The announcement does not point a specific threat in the samba code. > It mentions that "This version of Samba adds explicit overrun and > overflow checks on fragment re-assembly of SMB/CIFS packets to ensure > that only valid re-assembly is performed by smbd." > > It also mentions that samba is highly vulnerable to attacks from an > external network, And that > 1. host based protection > 2. interface protection > 3. Using a firewall > 4. Using a IPC$ share deny > May reduce vulnerability to such attacks. > > There is no access to my samba servers from the internet, but I would > like to know more about this security issue - specially, which source > codes are involved. (SMB client code is currently no issue for me) Any > list of affected source files would be appreciated. How can we be sure that you are not a script-kiddie? Regards - Richard Sharpe, rsharpe[at]ns.aus.com, rsharpe[at]samba.org, sharpe[at]ethereal.com, http://www.richardsharpe.com
RE: Question - Latest security alery of samba
On Sun, 16 Mar 2003, Nir Livni wrote: > I've read the announcement carefully. > The announcement does not point a specific threat in the samba code. > It mentions that "This version of Samba adds explicit overrun and overflow > checks on > fragment re-assembly of SMB/CIFS packets to ensure that only valid > re-assembly is performed by smbd." > > It also mentions that samba is highly vulnerable to attacks from an external > network, > And that > 1. host based protection > 2. interface protection > 3. Using a firewall > 4. Using a IPC$ share deny > May reduce vulnerability to such attacks. > > There is no access to my samba servers from the internet, but I would like > to know more about this security issue - specially, which source codes are > involved. (SMB client code is currently no issue for me) > Any list of affected source files would be appreciated. How can we be sure that you are not a script-kiddie? Regards - Richard Sharpe, rsharpe[at]ns.aus.com, rsharpe[at]samba.org, sharpe[at]ethereal.com, http://www.richardsharpe.com
RE: Question - Latest security alery of samba
I've read the announcement carefully. The announcement does not point a specific threat in the samba code. It mentions that "This version of Samba adds explicit overrun and overflow checks on fragment re-assembly of SMB/CIFS packets to ensure that only valid re-assembly is performed by smbd." It also mentions that samba is highly vulnerable to attacks from an external network, And that 1. host based protection 2. interface protection 3. Using a firewall 4. Using a IPC$ share deny May reduce vulnerability to such attacks. There is no access to my samba servers from the internet, but I would like to know more about this security issue - specially, which source codes are involved. (SMB client code is currently no issue for me) Any list of affected source files would be appreciated. Thanks, Nir -Original Message- From: Alexander Bokovoy [mailto:[EMAIL PROTECTED] Sent: Sunday, March 16, 2003 4:31 PM To: Nir Livni; [EMAIL PROTECTED] Subject: Re: Question - Latest security alery of samba On Sun, Mar 16, 2003 at 04:27:04PM +0200, Nir Livni wrote: > Hi all, > Just wanted to know if the latest security alert is all about > quotas.c. An upgrade (for me) is a bit problematic at the moment. If I > patch this specific source code myself and recompile smbd - is it > (basically) enough ? No, it is not all about quotas.c. Please read carefully announcement. You will also find there some suggestions how to make break harder in mean time, when you are working on upgrade. The upgrade is really required. -- / Alexander Bokovoy Samba Team http://www.samba.org/ ALT Linux Team http://www.altlinux.org/ Midgard Project Ry http://www.midgard-project.org/
Re: Question - Latest security alery of samba
On Sun, Mar 16, 2003 at 04:27:04PM +0200, Nir Livni wrote: > Hi all, > Just wanted to know if the latest security alert is all about quotas.c. > An upgrade (for me) is a bit problematic at the moment. > If I patch this specific source code myself and recompile smbd - is it > (basically) enough ? No, it is not all about quotas.c. Please read carefully announcement. You will also find there some suggestions how to make break harder in mean time, when you are working on upgrade. The upgrade is really required. -- / Alexander Bokovoy Samba Team http://www.samba.org/ ALT Linux Team http://www.altlinux.org/ Midgard Project Ry http://www.midgard-project.org/
