HP ProCurve Manager SNAC UpdateDomainControllerServlet File Upload Posted Authored by, Site This Metasploit module exploits a path traversal flaw in the HP ProCurve Manager SNAC Server. The vulnerability in the UpdateDomainControllerServlet allows an attacker to upload arbitrary files, just having into account binary writes aren't allowed. Additionally, authentication can be bypassed in order to upload the file. This Metasploit module has been tested successfully on the SNAC server installed with HP ProCurve Manager 4.0. Tags , advisories , MD5 b584e917d5e8 .

Yesterday, the Internet Storm Center published a diary called. That particular diary is Cisco-centric, so I thought I’d put together something similar for HP ProCurve gear (at least the 2650, 2910s, and 5400s I’ve worked with). Default Credentials HP ProCurve gear ships without any type of authentication, by default. This is similar to Cisco, however Cisco gear will not let us login via the network if a password has not been configured. HP ProCurve gear will.

This Metasploit module exploits a path traversal flaw in the HP ProCurve Manager SNAC Server. The vulnerability in the UpdateCertificatesServlet allows an attacker to upload arbitrary files, just having into account binary writes aren't allowed. Additionally, authentication can be bypassed in order.

For example, I have a ProCurve 2650 here that I completely reset to factory defaults and connected to my home lab. The switch is configured to use DHCP to obtain an IP address. Once the device has a valid IP address on the network, we are able to telnet to the device and gain complete access to it without having to authenticate. In short, you cannot login with default credentials because there are none.

Just telnet in and gain administrative access! While not quite as good as per-user authentication backended to your directory service of choice (see below), we can set up two accounts on the device: one unprivileged, one privileged. The “operator” user is unprivileged, while the “manager” user is privileged. You can choose to use these same usernames, or create your own, e.g.: Switch(config)# password operator Switch(config)# password operator user-name junior Switch(config)# password manager Switch(config)# password manager user-name admin In any of those instances, you’ll be prompted twice for the password you wish to set.

I should also note that every ProCurve switch I’ve seen ships with SNMP read/write enabled by default with a community string of “public”. Seriously, HP? You can (and should) turn that off with “ no snmp-server community public“. Prevent Access in the First Place Similar to Cisco’s “access-class”, we can restrict management of our HP devices down to specific hosts or subnets, e.g.: Switch(config)# ip authorized-managers 192.168.7.42 255.255.255.255 access manager Switch(config)# ip authorized-managers 192.168.7.0 255.255.255.0 access operator Some devices will allow us to specify the “access-method” (e.g. SSH, SNMP, etc.): Switch(config)# ip authorized-managers 192.168.38.0 255.255.255.0 access manager access-method ssh Switch(config)# ip authorized-managers 192.168.55.183 255.255.255.255 access operator access-method snmp This would allow “manager” SSH access from 192.168.38.0/24, while also allowing the host 192.168.55.183 read-only access to the device via SNMP.

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Encrypt all Administrative Access As mentioned above, SNMP and telnet are enabled by default (never a good thing). If you’re going to use SNMP, then you should only be using SNMPv3 (see my article,, for an example of how to do that). Likewise, you should never use telnet, but instead use SSH (and only version 2). Setting up SSH is simple: Switch(config)# ip ssh version 2 Switch(config)# ip ssh Once you’ve done that, you should also disable telnet: Switch(config)# no telnet-server I’m not a big fan of using web interfaces to manage network devices, but I know that some people are.

Device management by HTTP is also enabled by default.

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