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CVE-2011-5279

UnknownEPSS 19.09%

Last modified

CVE-2011-5279 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 19.09% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability
19.09%

97.0th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
MicrosoftInternet Information Services4.0
MicrosoftInternet Information Services5.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2011-5279?
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.
How severe is CVE-2011-5279?
Severity scoring for CVE-2011-5279 is pending analysis. The EPSS model estimates a 19.09% probability of exploitation in the next 30 days.
How do I fix CVE-2011-5279?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

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Source: NVD / NIST