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AUSCERT External Security Bulletin Redistribution
ESB-2020.0994
USN-4308-1: Twisted vulnerabilities
20 March 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: Twisted
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
Modify Arbitrary Files -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Provide Misleading Information -- Remote/Unauthenticated
Reduced Security -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-10109 CVE-2020-10108 CVE-2019-12855
CVE-2019-12387 CVE-2019-9515 CVE-2019-9514
CVE-2019-9512
Reference: ESB-2020.0943
ESB-2019.4787
ESB-2019.2434.2
ESB-2019.3230.2
Original Bulletin:
https://usn.ubuntu.com/4308-1/
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USN-4308-1: Twisted vulnerabilities
19 March 2020
twisted vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 19.10
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
Summary
Several security issues were fixed in Twisted.
Software Description
o twisted - Event-based framework for internet applications
Details
it was discovered that Twisted incorrectly validated or sanitized certain URIs
or HTTP methods. A remote attacker could use this issue to inject invalid
characters and possibly perform header injection attacks. (CVE-2019-12387)
It was discovered that Twisted incorrectly verified XMPP TLS certificates. A
remote attacker could possibly use this issue to perform a man-in-the-middle
attack and obtain sensitive information. (CVE-2019-12855)
It was discovered that Twisted incorrectly handled HTTP/2 connections. A remote
attacker could possibly use this issue to cause Twisted to hang or consume
resources, leading to a denial of service. This issue only affected Ubuntu
18.04 LTS and Ubuntu 19.10. (CVE-2019-9512, CVE-2019-9514, CVE-2019-9515)
Jake Miller and ZeddYu Lu discovered that Twisted incorrectly handled certain
content-length headers. A remote attacker could possibly use this issue to
perform HTTP request splitting attacks. (CVE-2020-10108, CVE-2020-10109)
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 19.10
python-twisted - 18.9.0-3ubuntu1.1
python-twisted-bin - 18.9.0-3ubuntu1.1
python-twisted-web - 18.9.0-3ubuntu1.1
python3-twisted - 18.9.0-3ubuntu1.1
python3-twisted-bin - 18.9.0-3ubuntu1.1
Ubuntu 18.04 LTS
python-twisted - 17.9.0-2ubuntu0.1
python-twisted-bin - 17.9.0-2ubuntu0.1
python-twisted-web - 17.9.0-2ubuntu0.1
python3-twisted - 17.9.0-2ubuntu0.1
python3-twisted-bin - 17.9.0-2ubuntu0.1
Ubuntu 16.04 LTS
python-twisted - 16.0.0-1ubuntu0.4
python-twisted-bin - 16.0.0-1ubuntu0.4
python-twisted-web - 16.0.0-1ubuntu0.4
python3-twisted - 16.0.0-1ubuntu0.4
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 CVE-2019-12387
o CVE-2019-12855
o CVE-2019-9512
o CVE-2019-9514
o CVE-2019-9515
o CVE-2020-10108
o CVE-2020-10109
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