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CVE-2016-5699

UnknownEPSS 9.89%

Last modified

CVE-2016-5699 is a vulnerability of currently unknown severity. CRLF injection vulnerability in the HTTPConnection.putheader function in urllib2 and urllib in CPython (aka Python) before 2.7.10 and 3.x before 3.4.4 allows remote attackers to inject arbitrary HTTP headers via CRLF sequences in a URL.. EPSS estimates a 9.89% chance of exploitation in the next 30 days.

Description

CRLF injection vulnerability in the HTTPConnection.putheader function in urllib2 and urllib in CPython (aka Python) before 2.7.10 and 3.x before 3.4.4 allows remote attackers to inject arbitrary HTTP headers via CRLF sequences in a URL.

Metrics

EPSS Probability
9.89%

95.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
PythonPython<= 2.7.9
PythonPython3.0
PythonPython3.0.1
PythonPython3.1.0
PythonPython3.1.1
PythonPython3.1.2
PythonPython3.1.3
PythonPython3.1.4
PythonPython3.1.5
PythonPython3.2.0
PythonPython3.2.1
PythonPython3.2.2
PythonPython3.2.3
PythonPython3.2.4
PythonPython3.2.5
PythonPython3.2.6
PythonPython3.3.0
PythonPython3.3.1
PythonPython3.3.2
PythonPython3.3.3
PythonPython3.3.4
PythonPython3.3.5
PythonPython3.3.6
PythonPython3.4.0
PythonPython3.4.1
PythonPython3.4.2
PythonPython3.4.3

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2016-5699?
CRLF injection vulnerability in the HTTPConnection.putheader function in urllib2 and urllib in CPython (aka Python) before 2.7.10 and 3.x before 3.4.4 allows remote attackers to inject arbitrary HTTP headers via CRLF sequences in a URL.
How severe is CVE-2016-5699?
Severity scoring for CVE-2016-5699 is pending analysis. The EPSS model estimates a 9.89% probability of exploitation in the next 30 days.
How do I fix CVE-2016-5699?
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.

Are you affected by CVE-2016-5699?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST