Ubuntu: 3990-1 Urllib3 HTTP Library Vulnerabilities That Matter

ubuntu

May 21, 2019

Several security issues were fixed in urllib3.

Summary

Several security issues were fixed in urllib3.

Software Description:

- python-urllib3: HTTP library with thread-safe connection pooling for Python

Details:

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)

Topics Covered

security advisory Ubuntu HTTP library CRLF injection credential exposure urllib3 cross-origin redirect

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 19.04:
  python-urllib3                  1.24.1-1ubuntu0.1
  python3-urllib3                 1.24.1-1ubuntu0.1

Ubuntu 18.10:
  python-urllib3                  1.22-1ubuntu0.18.10.1
  python3-urllib3                 1.22-1ubuntu0.18.10.1

Ubuntu 18.04 LTS:
  python-urllib3                  1.22-1ubuntu0.18.04.1
  python3-urllib3                 1.22-1ubuntu0.18.04.1

Ubuntu 16.04 LTS:
  python-urllib3                  1.13.1-2ubuntu0.16.04.3
  python3-urllib3                 1.13.1-2ubuntu0.16.04.3

In general, a standard system update will make all the necessary changes.