Summary
It was discovered that urllib3 incorrectly removed Authorization HTTP
headers when handled cross-origin redirects. This could result in
credentials being sent to unintended hosts. This issue only affected Ubuntu
16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2018-20060)
It was discovered that urllib3 incorrectly stripped certain characters from
requests. A remote attacker could use this issue to perform CRLF injection.
(CVE-2019-11236)
It was discovered that urllib3 incorrectly handled situations where a
desired set of CA certificates were specified. This could result in
certificates being accepted by the default CA certificates contrary to
expectations. This issue only affected Ubuntu 18.04 LTS, Ubuntu 18.10, and
Ubuntu 19.04. (CVE-2019-11324)
Fixed packages 2
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 16.04 LTS 16.04:LTS | python-urllib3 | 1.13.1-2ubuntu0.16.04.3 |
| Ubuntu · 18.04 LTS 18.04:LTS | python-urllib3 | 1.22-1ubuntu0.18.04.1 |
Vulnerabilities 3
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Critical 9.8
Exposure of Sensitive Information to an Unauthorized Actor in urllib3
urllib3 before version 1.23 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 h…
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High 7.5
Improper Certificate Validation in urllib3
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 cor…
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Medium 6.1
Improper Neutralization of CRLF Sequences in urllib3 library for Python
In the urllib3 library through 1.24.1 for Python, CRLF injection is possible if the attacker controls the request parameter.