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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2018-20852 Detail

Description

http.cookiejar.DefaultPolicy.domain_return_ok in Lib/http/cookiejar.py in Python before 3.7.3 does not correctly validate the domain: it can be tricked into sending existing cookies to the wrong server. An attacker may abuse this flaw by using a server with a hostname that has another valid hostname as a suffix (e.g., pythonicexample.com to steal cookies for example.com). When a program uses http.cookiejar.DefaultPolicy and tries to do an HTTP connection to an attacker-controlled server, existing cookies can be leaked to the attacker. This affects 2.x through 2.7.16, 3.x before 3.4.10, 3.5.x before 3.5.7, 3.6.x before 3.6.9, and 3.7.x before 3.7.3.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00071.html
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00071.html
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00074.html
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00074.html
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html
https://access.redhat.com/errata/RHSA-2019:3725
https://access.redhat.com/errata/RHSA-2019:3725
https://access.redhat.com/errata/RHSA-2019:3948
https://access.redhat.com/errata/RHSA-2019:3948
https://bugs.python.org/issue35121 Exploit  Issue Tracking  Vendor Advisory 
https://bugs.python.org/issue35121 Exploit  Issue Tracking  Vendor Advisory 
https://lists.debian.org/debian-lts-announce/2019/08/msg00022.html
https://lists.debian.org/debian-lts-announce/2019/08/msg00022.html
https://lists.debian.org/debian-lts-announce/2019/08/msg00040.html
https://lists.debian.org/debian-lts-announce/2019/08/msg00040.html
https://lists.debian.org/debian-lts-announce/2020/07/msg00011.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.debian.org/debian-lts-announce/2020/08/msg00034.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/COATURTCY7G67AYI6UDV5B2JZTBCKIDX/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/COATURTCY7G67AYI6UDV5B2JZTBCKIDX/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K7HNVIFMETMFWWWUNTB72KYJYXCZOS5V/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K7HNVIFMETMFWWWUNTB72KYJYXCZOS5V/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZBTGPBUABGXZ7WH7677OEM3NSP6ZEA76/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZBTGPBUABGXZ7WH7677OEM3NSP6ZEA76/
https://python-security.readthedocs.io/vuln/cookie-domain-check.html Vendor Advisory 
https://python-security.readthedocs.io/vuln/cookie-domain-check.html Vendor Advisory 
https://security.gentoo.org/glsa/202003-26
https://security.gentoo.org/glsa/202003-26
https://usn.ubuntu.com/4127-1/
https://usn.ubuntu.com/4127-1/
https://usn.ubuntu.com/4127-2/
https://usn.ubuntu.com/4127-2/
https://www.oracle.com/security-alerts/cpuapr2020.html
https://www.oracle.com/security-alerts/cpuapr2020.html

Weakness Enumeration

CWE-ID CWE Name Source
CWE-20 Improper Input Validation cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

20 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-20852
NVD Published Date:
07/13/2019
NVD Last Modified:
11/20/2024
Source:
MITRE