| Description: | Summary:
The remote host is missing an update for the Debian 'python-urllib3' package(s) announced via the DLA-2686-1 advisory.
Vulnerability Insight:
Several vulnerabilities were discovered in python-urllib3, a HTTP client for Python.
CVE-2018-20060
Urllib3 does not remove the Authorization HTTP header when following a cross-origin redirect (i.e., a redirect that differs in host, port, or scheme). This can allow for credentials in the Authorization header to be exposed to unintended hosts or transmitted in cleartext.
CVE-2019-11236
CRLF injection is possible if the attacker controls the request parameter.
CVE-2019-11324
Urllib3 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.
CVE-2020-26137
Urllib3 allows CRLF injection if the attacker controls the HTTP request method, as demonstrated by inserting CR and LF control characters in the first argument of putrequest().
For Debian 9 stretch, these problems have been fixed in version 1.19.1-1+deb9u1.
We recommend that you upgrade your python-urllib3 packages.
For the detailed security status of python-urllib3 please refer to its security tracker page at: [link moved to references]
Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: [link moved to references]
Affected Software/OS:
'python-urllib3' package(s) on Debian 9.
Solution:
Please install the updated package(s).
CVSS Score:
6.4
CVSS Vector:
AV:N/AC:L/Au:N/C:P/I:P/A:N
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