Vulnerability Details : CVE-2009-4444
Microsoft Internet Information Services (IIS) 5.x and 6.x uses only the portion of a filename before a ; (semicolon) character to determine the file extension, which allows remote attackers to bypass intended extension restrictions of third-party upload applications via a filename with a (1) .asp, (2) .cer, or (3) .asa first extension, followed by a semicolon and a safe extension, as demonstrated by the use of asp.dll to handle a .asp;.jpg file.
Threat overview for CVE-2009-4444
Top countries where our scanners detected CVE-2009-4444
Top open port discovered on systems with this issue
80
IPs affected by CVE-2009-4444 136,614
Threat actors abusing to this issue?
Yes
Find out if you* are
affected by CVE-2009-4444!
*Directly or indirectly through your vendors, service providers and 3rd parties.
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attack surface intelligence
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Exploit prediction scoring system (EPSS) score for CVE-2009-4444
Probability of exploitation activity in the next 30 days: 36.62%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 97 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2009-4444
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
6.0
|
MEDIUM | AV:N/AC:M/Au:S/C:P/I:P/A:P |
6.8
|
6.4
|
NIST |
References for CVE-2009-4444
-
http://soroush.secproject.com/downloadable/iis-semicolon-report.pdf
Third Party Advisory
-
http://www.vupen.com/english/advisories/2009/3634
Third Party Advisory
-
http://www.securityfocus.com/bid/37460
Third Party Advisory;VDB Entry
-
http://blogs.technet.com/msrc/archive/2009/12/27/new-reports-of-a-vulnerability-in-iis.aspx
Broken Link
-
http://securitytracker.com/id?1023387
Third Party Advisory;VDB Entry
Products affected by CVE-2009-4444
- cpe:2.3:a:microsoft:internet_information_services:5.0:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:internet_information_services:6.0:*:*:*:*:*:*:*