Re: Vulnerable PHP version according to nessus

2011-12-28 Thread Ashley Taylor
Depending on your aim with your www-serv, check out suhosin.org. Some
patches that harden PHP when used in multi-user envs.

Sent from my iPhone

On 28 Dec 2011, at 13:45, Dave Henley  wrote:

 thanks

Dave

> Date: Wed, 28 Dec 2011 15:31:53 +0200
> From: he...@nerv.fi
> To: dhenl...@live.com
> CC: j.andra...@gmail.com; j...@debian.org; debian-security@lists.debian.org
> Subject: Re: Vulnerable PHP version according to nessus
>
> On Wed, Dec 28, 2011 at 12:53:13PM +, Dave Henley wrote:
> > Thnaks, I checked the CVE`s against the changelogs and approx. 50% is
covered.
> > Is there a website of some sort to check what kind of CVE`s have been
patched?
> > If nessus does not provide a reliable report, what is the best next
step to take here?
> > Are there any howto`s or tutorials on howto secure a php installation
on a debian system?
> > Any suggestions would be very helpful.
>
> Update all software in your www-server. Some useful links:
>
> http://security-tracker.debian.org/tracker/
> http://www.debian.org/doc/manuals/securing-debian-howto/
>
> - Henri Salo


RE: Vulnerable PHP version according to nessus

2011-12-28 Thread Dave Henley

thanks

Dave

> Date: Wed, 28 Dec 2011 15:31:53 +0200
> From: he...@nerv.fi
> To: dhenl...@live.com
> CC: j.andra...@gmail.com; j...@debian.org; debian-security@lists.debian.org
> Subject: Re: Vulnerable PHP version according to nessus
> 
> On Wed, Dec 28, 2011 at 12:53:13PM +, Dave Henley wrote:
> > Thnaks, I checked the CVE`s against the changelogs and approx. 50% is 
> > covered.
> > Is there a website of some sort to check what kind of CVE`s have been 
> > patched?
> > If nessus does not provide a reliable report, what is the best next step to 
> > take here?
> > Are there any howto`s or tutorials on howto secure a php installation on a 
> > debian system?
> > Any suggestions would be very helpful.
> 
> Update all software in your www-server. Some useful links:
> 
> http://security-tracker.debian.org/tracker/
> http://www.debian.org/doc/manuals/securing-debian-howto/
> 
> - Henri Salo
  

Re: Vulnerable PHP version according to nessus

2011-12-28 Thread Henri Salo
On Wed, Dec 28, 2011 at 12:53:13PM +, Dave Henley wrote:
> Thnaks, I checked the CVE`s against the changelogs and approx. 50% is covered.
> Is there a website of some sort to check what kind of CVE`s have been patched?
> If nessus does not provide a reliable report, what is the best next step to 
> take here?
> Are there any howto`s or tutorials on howto secure a php installation on a 
> debian system?
> Any suggestions would be very helpful.

Update all software in your www-server. Some useful links:

http://security-tracker.debian.org/tracker/
http://www.debian.org/doc/manuals/securing-debian-howto/

- Henri Salo


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RE: Vulnerable PHP version according to nessus

2011-12-28 Thread Dave Henley

Thnaks, I checked the CVE`s against the changelogs and approx. 50% is covered.
Is there a website of some sort to check what kind of CVE`s have been patched?
If nessus does not provide a reliable report, what is the best next step to 
take here?
Are there any howto`s or tutorials on howto secure a php installation on a 
debian system?
Any suggestions would be very helpful.


From: j.andra...@gmail.com
Date: Wed, 28 Dec 2011 12:47:48 +0100
Subject: Re: Vulnerable PHP version according to nessus
To: j...@debian.org
CC: debian-security@lists.debian.org

2011/12/28 Moritz Mühlenhoff 


Dave Henley  schrieb:

> --_08b89ad2-8af0-454c-bd3d-7274adf10707_

> Content-Type: text/plain; charset="iso-8859-1"

> Content-Transfer-Encoding: quoted-printable

>

>

> I recently installed a Debian Squeeze system along with apache2 and PHP5.

> The system is fully up-to-date and the following php packages are installed=



Nearly all Nessus checks are junk; they only check version

numbers, but not whether a vulnerability has actually been fixed.



In order to try to be more accurate, you could enable the "Thorough scan" 
option in Nessus. Disable the "safe checks" options might help, so Nessus does 
not rely (only) on version number and banners but actually tries to exploit the 
vulnerability (depending on how the NASL script/plugin is written, of course). 
However, this could cause that, if there is a denial of service vulnerability 
or any other that might impact on running services, these might be affected, 
and maybe the service would have to be restarted or even the host rebooted (for 
example, if it's a vulnerability that crashes the OS)


 
Since we address security vulnerabilities with backports this

leads to numerous false positives.



Cheers,

Moritz



Best Regards,

-- 
Jonás Andradas
GPG Fingerprint:  678F 7BD0 83C3 28CE 9E8F
   3F7F 4D87 9996 E0C6 9372

  

Re: Vulnerable PHP version according to nessus

2011-12-28 Thread Jonas Andradas
2011/12/28 Moritz Mühlenhoff 

> Dave Henley  schrieb:
> > --_08b89ad2-8af0-454c-bd3d-7274adf10707_
> > Content-Type: text/plain; charset="iso-8859-1"
> > Content-Transfer-Encoding: quoted-printable
> >
> >
> > I recently installed a Debian Squeeze system along with apache2 and PHP5.
> > The system is fully up-to-date and the following php packages are
> installed=
>
> Nearly all Nessus checks are junk; they only check version
> numbers, but not whether a vulnerability has actually been fixed.
>
>
In order to try to be more accurate, you could enable the "Thorough scan"
option in Nessus. Disable the "safe checks" options might help, so Nessus
does not rely (only) on version number and banners but actually tries to
exploit the vulnerability (depending on how the NASL script/plugin is
written, of course). However, this could cause that, if there is a denial
of service vulnerability or any other that might impact on running
services, these might be affected, and maybe the service would have to be
restarted or even the host rebooted (for example, if it's a vulnerability
that crashes the OS)


> Since we address security vulnerabilities with backports this
> leads to numerous false positives.
>
> Cheers,
>Moritz
>
>
>
Best Regards,

-- 
Jonás Andradas
GPG Fingerprint:  678F 7BD0 83C3 28CE 9E8F
   3F7F 4D87 9996 E0C6 9372


Re: Vulnerable PHP version according to nessus

2011-12-28 Thread Moritz Mühlenhoff
Dave Henley  schrieb:
> --_08b89ad2-8af0-454c-bd3d-7274adf10707_
> Content-Type: text/plain; charset="iso-8859-1"
> Content-Transfer-Encoding: quoted-printable
>
>
> I recently installed a Debian Squeeze system along with apache2 and PHP5.
> The system is fully up-to-date and the following php packages are installed=

Nearly all Nessus checks are junk; they only check version
numbers, but not whether a vulnerability has actually been fixed.

Since we address security vulnerabilities with backports this
leads to numerous false positives.

Cheers,
Moritz


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Re: Vulnerable PHP version according to nessus

2011-12-28 Thread Henrik Ahlgren
On Wed, Dec 28, 2011 at 07:59:08AM +, Dave Henley wrote:
> When I scan my system for vulnerabillities with nessus I get the follwoing 
> high risk output:
> 
> Synopsis: The remote web server uses a version of PHP that is affected by
> multiple vulnerabilities.
> 
> Description
> According to its banner, the version of PHP 5.3.x installed on the
> remote host is older than 5.3.7. 
> 
> Solution
> Upgrade to PHP 5.3.7 or later.
> 
> How do I solve this problem and make sure my system is not prone to any PHP 
> vulnerabilities?


I would guess that Nessus just checks the version number without
taking into account the fact that Debian normally backports security
patches instead of upgrading to newer upstream version. You can
see from the changelog.Debian.gz which CVEs are patched.



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