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CVE-2019-16056

HIGHCVSS 7.5/10EPSS 5.37%

Last modified

CVE-2019-16056 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An issue was discovered in Python through 2.7.16, 3.x through 3.5.7, 3.6.x through 3.6.9, and 3.7.x through 3.7.4. The email module wrongly parses email addresses that contain multiple @ characters. EPSS estimates a 5.37% chance of exploitation in the next 30 days.

Description

An issue was discovered in Python through 2.7.16, 3.x through 3.5.7, 3.6.x through 3.6.9, and 3.7.x through 3.7.4. The email module wrongly parses email addresses that contain multiple @ characters. An application that uses the email module and implements some kind of checks on the From/To headers of a message could be tricked into accepting an email address that should be denied. An attack may be the same as in CVE-2019-11340; however, this CVE applies to Python more generally.

Metrics

CVSS 3.1
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability
5.37%

91.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
PythonPython<= 2.7.16
PythonPython>= 3.0.0, <= 3.0.1
PythonPython>= 3.1.0, <= 3.1.5
PythonPython>= 3.2.0, <= 3.2.6
PythonPython>= 3.3.0, <= 3.3.7
PythonPython>= 3.4.0, <= 3.4.10
PythonPython>= 3.5.0, <= 3.5.7
PythonPython>= 3.6.0, <= 3.6.9
PythonPython>= 3.7.0, <= 3.7.4
FedoraprojectFedora29
FedoraprojectFedora30
FedoraprojectFedora31
DebianDebian Linux8.0
DebianDebian Linux9.0
CanonicalUbuntu Linux12.04
CanonicalUbuntu Linux14.04
CanonicalUbuntu Linux16.04
CanonicalUbuntu Linux18.04
CanonicalUbuntu Linux19.04
RedhatSoftware Collections1.0
OracleCommunications Operations Monitor>= 4.1, <= 4.3
OracleCommunications Operations Monitor3.4
OraclePeoplesoft Enterprise Peopletools8.57
OraclePeoplesoft Enterprise Peopletools8.58
OracleZfs Storage Appliance Kit8.8
OracleSolaris11
OpensuseLeap15.0
OpensuseLeap15.1

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-16056?
An issue was discovered in Python through 2.7.16, 3.x through 3.5.7, 3.6.x through 3.6.9, and 3.7.x through 3.7.4. The email module wrongly parses email addresses that contain multiple @ characters. An application that uses the email module and implements some kind of checks on the From/To headers of a message could be tricked into accepting an email address that should be denied. An attack may be the same as in CVE-2019-11340; however, this CVE applies to Python more generally.
How severe is CVE-2019-16056?
CVE-2019-16056 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 5.37% probability of exploitation in the next 30 days.
How do I fix CVE-2019-16056?
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.

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Source: NVD / NIST