CVE-2019-11324 Information

Description

The urllib3 library before 1.24.2 for Python mishandles certain cases where the desired set of CA certificates is different from the OS store of CA certificates which results in SSL connections succeeding in situations where a verification failure is the correct outcome. This is related to use of the ssl_context ca_certs or ca_certs_dir argument.

CVSS Vector

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

Reference

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00039.html http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00041.html http://www.openwall.com/lists/oss-security/2019/04/19/1 [oss-security] 20190418 Re: urllib3: adds system certificates to ssl_context https://access.redhat.com/errata/RHSA-2019:3335 https://access.redhat.com/errata/RHSA-2019:3590 https://github.com/urllib3/urllib3/compare/a6ec68a…1efadf4 https://github.com/urllib3/urllib3/compare/a6ec68a…1efadf4 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NKGPJLVLVYCL4L4B4G5TIOTVK4BKPG72/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XOSA2NT4DUQDBEIWE6O7KKD24XND7TE2/ https://usn.ubuntu.com/3990-1/ The urllib3 library before 1.24.2 for Python mishandles certain cases where the desired set of CA certificates is different from the OS store of CA certificates which results in SSL connections succeeding in situations where a verification failure is the correct outcome. This is related to use of the ssl_context ca_certs or ca_certs_dir argument. cpe:2.3:a:python:urllib3::::::::

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

7.5