CVE-2011-5279: CRLF Injection
First published: Wed Apr 23 2014(Updated: )
CRLF injection vulnerability in the CGI implementation in Microsoft Internet Information Services (IIS) 4.x and 5.x on Windows NT and Windows 2000 allows remote attackers to modify arbitrary uppercase environment variables via a \n (newline) character in an HTTP header.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Microsoft Internet Information Services (IIS) | =4.0 | |
| Microsoft Internet Information Services (IIS) | =5.0 | |
| Microsoft Windows 2000 | ||
| Microsoft Windows NT | ||
| All of | ||
| Any of | ||
| Microsoft Internet Information Services (IIS) | =4.0 | |
| Microsoft Internet Information Services (IIS) | =5.0 | |
| Any of | ||
| Microsoft Windows 2000 | ||
| Microsoft Windows NT |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2011-5279?
CVE-2011-5279 has a medium severity rating due to its potential to allow remote attackers to modify environment variables.
How do I fix CVE-2011-5279?
To fix CVE-2011-5279, it is recommended to upgrade to a newer version of Microsoft Internet Information Services that does not have this vulnerability.
Which versions of IIS are affected by CVE-2011-5279?
CVE-2011-5279 affects Microsoft Internet Information Services versions 4.x and 5.x.
What type of attack is associated with CVE-2011-5279?
CVE-2011-5279 is associated with CRLF injection attacks where newline characters in HTTP headers can manipulate environment variables.
Can CVE-2011-5279 affect Windows 2000 or Windows NT systems?
CVE-2011-5279 specifically affects IIS running on Windows 2000 and Windows NT.
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