If it ONLY does dhcp/dns/ntp,that's fine.
If it also has a base apache install, it's likely vulnerable :)
Josh Reynolds, Chief Information Officer
SPITwSPOTS, www.spitwspots.com <http://www.spitwspots.com>
On 09/28/2014 06:38 AM, Ken Hohhof via Af wrote:
Why?
Take the case of a dedicated server that only does let’s say DHCP or
DNS or NTP. It only has one port open to the Internet, and there’s no
way to get to a bash shell via that port. How the hell is someone
going to pass an environment variable to a bash shell on that server?
*From:* Shayne Lebrun via Af <mailto:[email protected]>
*Sent:* Sunday, September 28, 2014 8:40 AM
*To:* [email protected] <mailto:[email protected]>
*Subject:* Re: [AFMUG] Bash specially-crafted environment variables
codeinjection attack
ØI think the articles have maybe overstated the risk a bit, since you
would need to either authenticate (at least as a regular user) to get
to a shell, or find a publicly exposed script that will pass an
environment variable to bash for you.
Please don’t think like this.
*From:*Af [mailto:[email protected]] *On Behalf
Of *Ken Hohhof via Af
*Sent:* Saturday, September 27, 2014 1:38 PM
*To:* [email protected]
*Subject:* Re: [AFMUG] Bash specially-crafted environment variables
code injection attack
So maybe I won’t do that.
The newer servers where I could just do a yum update have been
straightforward, as you’d expect.
I think the articles have maybe overstated the risk a bit, since you
would need to either authenticate (at least as a regular user) to get
to a shell, or find a publicly exposed script that will pass an
environment variable to bash for you.
*From:*Jeremy via Af <mailto:[email protected]>
*Sent:*Saturday, September 27, 2014 12:13 PM
*To:*[email protected] <mailto:[email protected]>
*Subject:*Re: [AFMUG] Bash specially-crafted environment variables
code injection attack
Our webserver was vulnerable. Tried to fix it without backing it up
first....yeah, I know. Lost it all. So I guess I will be building a
new website from my 2013 backup this weekend. It's a good thing I
carpet bombed my website to prevent anyone from messing with it!
On Sat, Sep 27, 2014 at 10:25 AM, Ken Hohhof via Af <[email protected]
<mailto:[email protected]>> wrote:
Unfortunately I have a couple old servers running RHEL4 and one old
BlueQuartz webhosting appliance based on CentOS4. I’m a little
reluctant to try compiling the patch myself unless I switch to a
difference shell first, if I screw up my command shell it might be
difficult to fix.
Any guess if I’d be safe using the RPM cited in this thread:
http://serverfault.com/questions/631055/how-do-i-patch-rhel-4-for-the-bash-vulnerabilities-in-cve-2014-6271-and-cve-2014
the RPM it points to is:
http://public-yum.oracle.com/repo/EnterpriseLinux/EL4/latest/i386/getPackage/bash-3.0-27.0.2.el4.i386.rpm
*From:*Ty Featherling via Af <mailto:[email protected]>
*Sent:*Saturday, September 27, 2014 10:52 AM
*To:*[email protected] <mailto:[email protected]>
*Subject:*Re: [AFMUG] Bash specially-crafted environment variables
code injection attack
Yeah probably the NSA! Hahaha!
-Ty
On Sep 26, 2014 10:36 PM, "That One Guy via Af" <[email protected]
<mailto:[email protected]>> wrote:
Man I bet theres some guy whose been exploiting this for 20 years who
is pissed right now
On Fri, Sep 26, 2014 at 1:54 PM, Ty Featherling via Af <[email protected]
<mailto:[email protected]>> wrote:
CentOS on some, Ubuntu on others. Already got the answers in this
thread though, thanks.
-Ty
On Fri, Sep 26, 2014 at 11:54 AM, Mike Hammett via Af <[email protected]
<mailto:[email protected]>> wrote:
Which distribution?
-----
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com
------------------------------------------------------------------------
*From: *"Ty Featherling via Af" <[email protected] <mailto:[email protected]>>
*To: *[email protected] <mailto:[email protected]>
*Sent: *Thursday, September 25, 2014 2:42:31 PM
*Subject: *Re: [AFMUG] Bash specially-crafted environment variables
code injection attack
Noob question but how can I easiest update my linux boxes to get the
latest patches?
-Ty
On Thu, Sep 25, 2014 at 1:59 PM, Josh Reynolds via Af <[email protected]
<mailto:[email protected]>> wrote:
Upgraded our systems at 6am yesterday for this. Also pulled the bash
.deb out of debian-stable/security for our ubiquiti edgerouters. (I
made on a post on the UBNT forum with the CVE info yesterday.)
Side note: TONS of things are affected by this...
Josh Reynolds, Chief Information Officer
SPITwSPOTS, www.spitwspots.com <http://www.spitwspots.com>
On 09/25/2014 10:25 AM, Peter Kranz via Af wrote:
PS.. This vulnerability can be exploited via HTTP/Apache attack vectors, so
you need to patch any vulnerable system running Apache.
Peter Kranz
Founder/CEO - Unwired Ltd
www.UnwiredLtd.com <http://www.UnwiredLtd.com>
Desk:510-868-1614 x100 <tel:510-868-1614%20x100>
Mobile:510-207-0000 <tel:510-207-0000>
[email protected] <mailto:[email protected]>
-----Original Message-----
From: Af [mailto:[email protected]] On Behalf Of
Matt via Af
Sent: Thursday, September 25, 2014 10:27 AM
To:[email protected] <mailto:[email protected]>
Subject: [AFMUG] Bash specially-crafted environment variables code
injection attack
Bash specially-crafted environment variables code injection attack
https://securityblog.redhat.com/2014/09/24/bash-specially-crafted-environment-variables-code-injection-attack/
--
All parts should go together without forcing. You must remember that
the parts you are reassembling were disassembled by you. Therefore, if
you can't get them together again, there must be a reason. By all
means, do not use a hammer. -- IBM maintenance manual, 1925
