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AUSCERT External Security Bulletin Redistribution
ESB-2019.2851
USN-3990-2: urllib3 vulnerability
31 July 2019
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AusCERT Security Bulletin Summary
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Product: python-urllib3
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Provide Misleading Information -- Remote with User Interaction
Access Confidential Data -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2019-11236
Reference: ESB-2019.2216
ESB-2019.1820
Original Bulletin:
https://usn.ubuntu.com/3990-2/
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USN-3990-2: urllib3 vulnerability
29 July 2019
python-urllib3 vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 14.04 ESM
Summary
urllib3 could be used to perform a CRLF injection if it received a specially
crafted request.
Software Description
o python-urllib3 - HTTP library with thread-safe connection pooling for
Python
Details
USN-3990-1 fixed a vulnerability in urllib3. This update provides the
corresponding update for Ubuntu 14.04 ESM.
Original advisory details:
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)
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 14.04 ESM
python-urllib3 - 1.7.1-1ubuntu4.1+esm1
python3-urllib3 - 1.7.1-1ubuntu4.1+esm1
To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .
In general, a standard system update will make all the necessary changes.
References
o USN-3990-1
o CVE-2019-11236
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