In words.protocols.jabber.xmlstream in Twisted through 19.2.1, XMPP support did not verify certificates when used with TLS, allowing an attacker to MITM connections.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - In words.protocols.jabber.xmlstream in Twisted through 19.2.1, XMPP support did not verify certificates     when used with TLS, allowing an attacker to MITM connections. (CVE-2019-12855)

Note that Nessus relies on the presence of the package as reported by the vendor.

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.

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.

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.

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.

ID	Name	Product	Family	Severity
222549	Linux Distros Unpatched Vulnerability : CVE-2019-12855	Nessus	Misc.	high
138519	Photon OS 1.0: Python PHSA-2020-1.0-0307	Nessus	PhotonOS Local Security Checks	high
138513	Photon OS 2.0: Python PHSA-2020-2.0-0260	Nessus	PhotonOS Local Security Checks	high
134758	Ubuntu 16.04 LTS / 18.04 LTS : Twisted vulnerabilities (USN-4308-1)	Nessus	Ubuntu Local Security Checks	critical
129349	SUSE SLES12 Security Update : python-Twisted (SUSE-SU-2019:2453-1)	Nessus	SuSE Local Security Checks	high
128538	openSUSE Security Update : python-Twisted (openSUSE-2019-2068)	Nessus	SuSE Local Security Checks	high
128145	SUSE SLED15 / SLES15 Security Update : python-Twisted (SUSE-SU-2019:2212-1)	Nessus	SuSE Local Security Checks	high
127875	Fedora 30 : python-twisted (2019-d480909528)	Nessus	Fedora Local Security Checks	high

Detections

Analytics

CVE-2019-12855

critical

Tenable Plugins

high

high

high

critical

high

high

high

high