CVE-2019-16056
High
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.
SeverityHigh
CVSS7.5
Exploit probability92. percentile5.1%
Product
Python
PublishedSep 6, 2019
First seenSep 6, 2019
Weakness typeCWE-20Improper input validation
How to fix
Vendor advisories
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K4KZEFP6E4YPYB52AF4WXCUDSGQOTF37/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NF3DRDGMVIRYNZMSLJIHNW47HOUQYXVG/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ER6LONC2B2WYIO56GBQUDU6QTWZDPUNQ/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E2HP37NUVLQSBW3J735A2DQDOZ4ZGBLY/
- usn.ubuntu.com/4151-1/
- usn.ubuntu.com/4151-2/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QP46PQSUKYPGWTADQ67NOV3BUN6JM34Z/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QASRD4E2G65GGEHYKVHYCXB2XWAGTNL4/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SDQQ56P7ZZR64XV5DUVWNSNXKKEXUG2J/
- access.redhat.com/errata/RHSA-2019:3725
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K7HNVIFMETMFWWWUNTB72KYJYXCZOS5V/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZBTGPBUABGXZ7WH7677OEM3NSP6ZEA76/
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| python python | v ≤ 2.7.16, 3.0.0 ≤ v ≤ 3.0.1, 3.1.0 ≤ v ≤ 3.1.5, 3.2.0 ≤ v ≤ 3.2.6, 3.3.0 ≤ v ≤ 3.3.7, 3.4.0 ≤ v ≤ 3.4.10, 3.5.0 ≤ v ≤ 3.5.7, 3.6.0 ≤ v ≤ 3.6.9, 3.7.0 ≤ v ≤ 3.7.4 | — |
| fedoraproject fedora | 29, 30, 31 | — |
| debian debian_linux | 8.0, 9.0 | — |
| canonical ubuntu_linux | 12.04, 14.04, 16.04, 18.04, 19.04 | — |
| redhat software_collections | 1.0 | — |
| oracle communications_operations_monitor | 4.1 ≤ v ≤ 4.3, 3.4 | — |
| oracle peoplesoft_enterprise_peopletools | 8.57, 8.58 | — |
| oracle zfs_storage_appliance_kit | 8.8 | — |
| oracle solaris | 11 | — |
| opensuse leap | 15.0, 15.1 | — |
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