The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230).
Attack Complexity
Low
AC
The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required
High
PR
The attacker requires privileges that provide significant (e.g., administrative) control over the vulnerable system allowing full access to the vulnerable system’s settings and files.
Scope
Unchanged
S
An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality
High
C
There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data.
Integrity
High
I
There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system.
Availability
High
A
There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.
Barracuda WAF V360 Firmware 8.0.1.014 Credential DisclosureKL-001-2017-011 : Barracuda WAF Internal Development Credential Disclosure
Title: Barracuda WAF Internal Development Credential Disclosure
Advisory ID: KL-001-2017-011
Publication Date: 2017.07.06
Publication URL: https://www.korelogic.com/Resources/Advisories/KL-001-2017-011.txt
1. Vulnerability Details
Affected Vendor: Barracuda
Affected Product: Web Application Firewall V360
Affected Version: Firmware v8.0.1.014
Platform: Embedded Linux
CWE Classification: CWE-489: Leftover Debug Code, CWE-200: Information Exposure
Impact: Privileged Access
Attack vector: Code Review
2. Vulnerability Description
Firmware reversing of the Barracuda Web Application Firewall
uncovered development artifacts that should have been removed
on the production images. Once the encryption scheme was broken,
many QA and development tools were discovered on the affected
partitions. Some of these contained sensitive information such
as authentication credentials used by internal developers.
3. Technical Description
root@(none):/realroot/root# grep -ri "bospw" *|more
newfile/lib/Stub.pm: 'BOSPW' => undef,
newfile/lib/Stub.pm: my $bospw = $self->_retrieve_bos_pw();
newfile/lib/Stub.pm: $self->_set_BOSPW($bospw);
newfile/lib/Stub.pm: my $bospw = Postbuild::get_bos_pw();
newfile/lib/Stub.pm: my $url =
"https://$bospw\@ops.barracudanetworks.com:443/cgi-old/createserialkey.cgi?model=$tmpmodel&date=$date&mac=$tmpMAC&revision=$tmprevision&hw=$tmphw&devel=$devel&vm=$vm&
platform=$platform&buildkey=$bdvers";
newfile/lib/Stub.pm: $bospw = Postbuild::get_bos_pw();
newfile/lib/Stub.pm: $url =
"https://$bospw\@ops.barracudanetworks.com:443/cgi-old/createserialkey.cgi?model=$tmpmodel&date=$date&mac=$tmpMAC&revision=$tmprevision&hw=$tmphw&devel=$devel&vm=$vm
&platform=$platform&dest_country=$ship_code&buildkey=$bdvers";
newfile/lib/Stub.pm: my $bospw;
newfile/lib/Stub.pm: if ( -f "/root/bospw" ) {
newfile/lib/Stub.pm: open IN, "/root/bospw";
newfile/lib/Stub.pm: $bospw = <IN>;
newfile/lib/Stub.pm: chomp($bospw);
newfile/lib/Stub.pm: $bospw = "manufacturing:N3rfH3rders";
newfile/lib/Stub.pm: return $bospw;
newfile/lib/Stub.pm:sub _get_BOSPW() {
newfile/lib/Stub.pm: return $self->{'BOSPW'};
newfile/lib/Stub.pm:sub _set_BOSPW() {
newfile/lib/Stub.pm: my ($self, $BOSPW) = @_;
newfile/lib/Stub.pm: $self->{'BOSPW'} = $BOSPW;
newfile/lib/Postbuild.pm: my $bospw = "manufacturing:N3rfH3rders";
newfile/lib/Postbuild.pm: if( -f "/root/bospw" ) {
newfile/lib/Postbuild.pm: open IN, "/root/bospw";
newfile/lib/Postbuild.pm: $bospw = <IN>;
newfile/lib/Postbuild.pm: chomp($bospw);
newfile/lib/Postbuild.pm: return $bospw;
newfile/lib/Postbuild.pm: my $bospw = get_bos_pw();
newfile/lib/Postbuild.pm:my $url =
"https://$bospw\@ops.barracuda.com:443/cgi-old/createserialkey.cgi?model=$tmpmodel&date=$date&mac=$tmpMAC&revision=$tmprevision&hw=$tmphw&devel=$devel&vm=$vm&pl
atform=$platform&bdvers=$bdvers";
newfile/lib/Postbuild.pm:$url =
"https://$bospw\@ops.barracuda.com:443/cgi-old/createserialkey.cgi?model=$tmpmodel&date=$date&mac=$tmpMAC&revision=$tmprevision&hw=$tmphw&devel=$devel&vm=$
vm&platform=$platform&dest_country=$ship_code&bdvers=$bdvers";
newfile/lib/Postbuild.pm: my $bospw = get_bos_pw();
newfile/lib/Postbuild.pm: my $url =
"https://$bospw\@ops.barracudanetworks.com:443/~order/prod_void.cgi?void_serial=$serial";
postbuild-code-platform-2.tar.gz.integrit:!/root/bospw
qaclear: unlink("/root/bospw");
qaclear.2:unlink("/root/bospw");
qapass:my @bospw = ("manufacturing:N3rfH3rders");
qapass:my $extrabospw = injectAndGet("__METHOD__://__POSTBUILDIP__/postbuild/files/os_updates2/root/bospw", {
METHOD => [ "http", "https" ], POSTBUILDIP => [ "mfg-postbuild.englab.cudanet.local" ] }, 10
);
qapass:if( defined($extrabospw) ) {
qapass:unshift @bospw, split(/\n/, $extrabospw);
qapass:$url = "https://__BOSPW__\@__BOSIP__/~order/prod_accept.cgi?serial=$serial&wh=$warehouse&firmware=$firmware"
qapass:$url = "https://__BOSPW__\@__BOSIP__/~order/prod_accept.cgi?serial=$serial&firmware=$firmware";
qapass:if (!defined(injectAndGet($url, { BOSPW => \@bospw, BOSIP => \@bosip } ))) {
qapass:$url = "https://__BOSPW__\@__BOSIP__/cgi-bin/get_serial_status.cgi?serial=$serial";
qapass:my $content = injectAndGet($url, { BOSPW => \@bospw, BOSIP => \@bosip } );
qapass:$url =
"https://__BOSPW__\@__BOSIP__/cgi-bin/shipping.cgi?option=qadocs&xlist=1&box_label=1&printer_loc=manufacturing&submit=Print&serial_id=$serial&override=$serial$loc_string";
qapass:$url =
"https://__BOSPW__\@__BOSIP__/cgi-bin/shipping.cgi?option=qadocs&xlist=1&box_label=1&link_code=1&printer_loc=manufacturing&submit=Print&serial_id=$serial&override=$serial$loc_string";
qapass:if( !defined(injectAndGet($url, { BOSPW => \@bospw, BOSIP => \@bosip })) ) {
qapass:$url =
"https://__BOSPW__\@__BOSIP__/cgi-bin/shipping.cgi?option=qadocs&serial_label=1&printer_loc=manufacturing&submit=Print&serial_id=$serial&override=$serial$loc_string";
qapass:if( !defined(injectAndGet($url, { BOSPW => \@bospw, BOSIP => \@bosip })) ) {
4. Mitigation and Remediation Recommendation
The vendor has patched this vulnerability in the lastest
virtual appliance release.
5. Credit
This vulnerability was discovered by Matt Bergin (@thatguylevel)
of KoreLogic, Inc. and Joshua Hardin.
6. Disclosure Timeline
2016.12.20 - KoreLogic sends vulnerability report and PoC to
Barracuda.
2016.12.21 - Barracuda acknowledges receipt of the vulnerability
report.
2017.01.09 - Barracuda informs KoreLogic that they are working
on remediation for this issue.
2017.01.26 - Barracuda asks for additional time beyond the
standard 45 business day embargo to address this
and other issues reported by KoreLogic.
2017.02.27 - 45 business days have elapsed since the issue was
reported.
2017.04.10 - 75 business days have elapsed since the issue was
reported.
2017.05.15 - 100 business days have elapsed since the issue was
reported.
2017.05.24 - Barracuda updates KoreLogic on the status of the
remediation efforts.
2017.06.13 - 120 business days have elapsed since the issue was
reported.
2017.06.27 - Barracuda informs KoreLogic that the issue has
been fixed in the latest release of the WAF
virtual appliance.
2017.07.06 - KoreLogic public disclosure.
7. Proof of Concept
See 3. Technical Description
The contents of this advisory are copyright(c) 2017
KoreLogic, Inc. and are licensed under a Creative Commons
Attribution Share-Alike 4.0 (United States) License:
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