Security fix for CVE-2019-12855.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for python-Twisted fixes the following issues :

Security issue fixed :

  - CVE-2019-12855: Fixed TLS certificate verification to     protecting against MITM attacks (bsc#1138461).

This update was imported from the SUSE:SLE-15:Update update project.

The remote Redhat Enterprise Linux 7 host has one or more packages installed that are affected by a vulnerability that has been acknowledged by the vendor but will not be patched.

  - python-twisted: XMPP  support in words.protocols.jabber.xmlstream in Twisted does not verify certificates     allowing for a MITM connections (CVE-2019-12855)

Note that Nessus has not tested for this issue but has instead relied on the package manager's report that the package is installed.

This update for python-Twisted fixes the following issues :

Security issue fixed :

CVE-2019-12855: Fixed TLS certificate verification to protecting against MITM attacks (bsc#1138461).

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

An update of the python package has been released.

The remote Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4308-1 advisory.

    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 machine-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)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Published	Updated	Severity
127875	Fedora 30 : python-twisted (2019-d480909528)	Nessus	Fedora Local Security Checks	8/14/2019	5/3/2024	high
128538	openSUSE Security Update : python-Twisted (openSUSE-2019-2068)	Nessus	SuSE Local Security Checks	9/6/2019	4/29/2024	high
199127	RHEL 7 : python-twisted (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	6/3/2024	6/3/2024	high
129349	SUSE SLES12 Security Update : python-Twisted (SUSE-SU-2019:2453-1)	Nessus	SuSE Local Security Checks	9/25/2019	4/23/2024	high
138513	Photon OS 2.0: Python PHSA-2020-2.0-0260	Nessus	PhotonOS Local Security Checks	7/15/2020	7/23/2024	high
128145	SUSE SLED15 / SLES15 Security Update : python-Twisted (SUSE-SU-2019:2212-1)	Nessus	SuSE Local Security Checks	8/26/2019	5/1/2024	high
134758	Ubuntu 16.04 LTS / 18.04 LTS : Twisted vulnerabilities (USN-4308-1)	Nessus	Ubuntu Local Security Checks	3/20/2020	8/29/2024	critical
138519	Photon OS 1.0: Python PHSA-2020-1.0-0307	Nessus	PhotonOS Local Security Checks	7/15/2020	3/1/2024	high

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