CVE-2019-9636

MEDIUM

Description

Python 2.7.x through 2.7.16 and 3.x through 3.7.2 is affected by: Improper Handling of Unicode Encoding (with an incorrect netloc) during NFKC normalization. The impact is: Information disclosure (credentials, cookies, etc. that are cached against a given hostname). The components are: urllib.parse.urlsplit, urllib.parse.urlparse. The attack vector is: A specially crafted URL could be incorrectly parsed to locate cookies or authentication data and send that information to a different host than when parsed correctly.

References

http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00092.html

http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00097.html

http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00024.html

http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00050.html

http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00042.html

http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html

http://www.securityfocus.com/bid/107400

https://access.redhat.com/errata/RHBA-2019:0763

https://access.redhat.com/errata/RHBA-2019:0764

https://access.redhat.com/errata/RHBA-2019:0959

https://access.redhat.com/errata/RHSA-2019:0710

https://access.redhat.com/errata/RHSA-2019:0765

https://access.redhat.com/errata/RHSA-2019:0806

https://access.redhat.com/errata/RHSA-2019:0902

https://access.redhat.com/errata/RHSA-2019:0981

https://access.redhat.com/errata/RHSA-2019:0997

https://access.redhat.com/errata/RHSA-2019:1467

https://access.redhat.com/errata/RHSA-2019:2980

https://access.redhat.com/errata/RHSA-2019:3170

https://bugs.python.org/issue36216

https://github.com/python/cpython/pull/12201

https://lists.debian.org/debian-lts-announce/2019/06/msg00022.html

https://lists.debian.org/debian-lts-announce/2019/06/msg00023.html

https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html

https://lists.debian.org/debian-lts-announce/2020/08/msg00034.html

https://lists.fedoraproject.org/archives/list/pa[email protected]/message/2ORNTF62QPLMJXIQ7KTZQ2776LMIXEKL/

https://lists.fedoraproject.org/archives/list/[email protected]/message/44TS66GJMO5H3RLMVZEBGEFTB6O2LJJU/

https://lists.fedoraproject.org/archives/list/[email protected]/message/46PVWY5LFP4BRPG3BVQ5QEEFYBVEXHCK/

https://lists.fedoraproject.org/archives/list/[email protected]/message/4X3HW5JRZ7GCPSR7UHJOLD7AWLTQCDVR/

https://lists.fedoraproject.org/archives/list/[email protected]/message/AEZ5IQT7OF7Q2NCGIVABOWYGKO7YU3NJ/

https://lists.fedoraproject.org/archives/list/[email protected]/message/CFBAAGM27H73OLYBUA2IAZFSUN6KGLME/

https://lists.fedoraproject.org/archives/list/[email protected]/message/D3LXPABKVLFYUHRYJPM3CSS5MS6FXKS7/

https://lists.fedoraproject.org/archives/list/[email protected]/message/E2HP37NUVLQSBW3J735A2DQDOZ4ZGBLY/

https://lists.fedoraproject.org/archives/list/[email protected]/message/ER6LONC2B2WYIO56GBQUDU6QTWZDPUNQ/

https://lists.fedoraproject.org/archives/list/[email protected]/message/HQEQLXLOCR3SNM3AA5RRYJFQ5AZBYJ4L/

https://lists.fedoraproject.org/archives/list/[email protected]/message/ICBEGRHIPHWPG2VGYS6R4EVKVUUF4AQW/

https://lists.fedoraproject.org/archives/list/[email protected]/message/IFAXBEY2TGOBDRKTR556JBXBVFSAKD6I/

https://lists.fedoraproject.org/archives/list/[email protected]/message/JCPGLTTOBB3QEARDX4JOYURP6ELNNA2V/

https://lists.fedoraproject.org/archives/list/[email protected]/message/JMWSKTNOHSUOT3L25QFJAVCFYZX46FYK/

https://lists.fedoraproject.org/archives/list/[email protected]/message/JSKPGPZQNTAULHW4UH63KGOOUIDE4RRB/

https://lists.fedoraproject.org/archives/list/[email protected]/message/JXASHCDD4PQFKTMKQN4YOP5ZH366ABN4/

https://lists.fedoraproject.org/archives/list/[email protected]/message/KRYFIMISZ47NTAU3XWZUOFB7CYL62KES/

https://lists.fedoraproject.org/archives/list/[email protected]/message/L25RTMKCF62DLC2XVSNXGX7C7HXISLVM/

https://lists.fedoraproject.org/archives/list/[email protected]/message/M34WOYCDKTDE5KLUACE2YIEH7D37KHRX/

https://lists.fedoraproject.org/archives/list/[email protected]/message/TR6GCO3WTV4D5L23WTCBF275VE6BVNI3/

https://python-security.readthedocs.io/vuln/urlsplit-nfkc-normalization.html

https://security.gentoo.org/glsa/202003-26

https://security.netapp.com/advisory/ntap-20190517-0001/

https://usn.ubuntu.com/4127-1/

https://usn.ubuntu.com/4127-2/

https://www.oracle.com/security-alerts/cpujan2020.html

Details

Source: MITRE

Published: 2019-03-08

Updated: 2020-08-24

Risk Information

CVSS v2.0

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3.0

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 3.9

Severity: CRITICAL