Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 22.2.0, Twisted SSH client and server implement is able to accept an infinite amount of data for the peer's SSH version identifier. This ends up with a buffer using all the available memory. The attach is a simple as `nc -rv localhost 22 < /dev/zero`. A patch is available in version 22.2.0. There are currently no known workarounds.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2023-056 advisory.

  - twisted is an event-driven networking engine written in Python. In affected versions twisted exposes     cookies and authorization headers when following cross-origin redirects. This issue is present in the     `twited.web.RedirectAgent` and `twisted.web. BrowserLikeRedirectAgent` functions. Users are advised to     upgrade. There are no known workarounds. (CVE-2022-21712)

  - Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 22.2.0,     Twisted SSH client and server implement is able to accept an infinite amount of data for the peer's SSH     version identifier. This ends up with a buffer using all the available memory. The attach is a simple as     `nc -rv localhost 22 < /dev/zero`. A patch is available in version 22.2.0. There are currently no known     workarounds. (CVE-2022-21716)

  - Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to version     22.4.0rc1, the Twisted Web HTTP 1.1 server, located in the `twisted.web.http` module, parsed several HTTP     request constructs more leniently than permitted by RFC 7230. This non-conformant parsing can lead to     desync if requests pass through multiple HTTP parsers, potentially resulting in HTTP request smuggling.
    Users who may be affected use Twisted Web's HTTP 1.1 server and/or proxy and also pass requests through a     different HTTP server and/or proxy. The Twisted Web client is not affected. The HTTP 2.0 server uses a     different parser, so it is not affected. The issue has been addressed in Twisted 22.4.0rc1. Two     workarounds are available: Ensure any vulnerabilities in upstream proxies have been addressed, such as by     upgrading them; or filter malformed requests by other means, such as configuration of an upstream proxy.
    (CVE-2022-24801)

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

The remote host is affected by the vulnerability described in GLSA-202301-02 (Twisted: Multiple Vulnerabilities)

  - twisted is an event-driven networking engine written in Python. In affected versions twisted exposes     cookies and authorization headers when following cross-origin redirects. This issue is present in the     `twited.web.RedirectAgent` and `twisted.web. BrowserLikeRedirectAgent` functions. Users are advised to     upgrade. There are no known workarounds. (CVE-2022-21712)

  - Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 22.2.0,     Twisted SSH client and server implement is able to accept an infinite amount of data for the peer's SSH     version identifier. This ends up with a buffer using all the available memory. The attach is a simple as     `nc -rv localhost 22 < /dev/zero`. A patch is available in version 22.2.0. There are currently no known     workarounds. (CVE-2022-21716)

  - Twisted is an event-based framework for internet applications. Started with version 0.9.4, when the host     header does not match a configured host `twisted.web.vhost.NameVirtualHost` will return a `NoResource`     resource which renders the Host header unescaped into the 404 response allowing HTML and script injection.
    In practice this should be very difficult to exploit as being able to modify the Host header of a normal     HTTP request implies that one is already in a privileged position. This issue was fixed in version     22.10.0rc1. There are no known workarounds. (CVE-2022-39348)

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

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2022-2022-231 advisory.

  - twisted is an event-driven networking engine written in Python. In affected versions twisted exposes     cookies and authorization headers when following cross-origin redirects. This issue is present in the     `twited.web.RedirectAgent` and `twisted.web. BrowserLikeRedirectAgent` functions. Users are advised to     upgrade. There are no known workarounds. (CVE-2022-21712)

  - Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 22.2.0,     Twisted SSH client and server implement is able to accept an infinite amount of data for the peer's SSH     version identifier. This ends up with a buffer using all the available memory. The attach is a simple as     `nc -rv localhost 22 < /dev/zero`. A patch is available in version 22.2.0. There are currently no known     workarounds. (CVE-2022-21716)

  - Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to version     22.4.0rc1, the Twisted Web HTTP 1.1 server, located in the `twisted.web.http` module, parsed several HTTP     request constructs more leniently than permitted by RFC 7230. This non-conformant parsing can lead to     desync if requests pass through multiple HTTP parsers, potentially resulting in HTTP request smuggling.
    Users who may be affected use Twisted Web's HTTP 1.1 server and/or proxy and also pass requests through a     different HTTP server and/or proxy. The Twisted Web client is not affected. The HTTP 2.0 server uses a     different parser, so it is not affected. The issue has been addressed in Twisted 22.4.0rc1. Two     workarounds are available: Ensure any vulnerabilities in upstream proxies have been addressed, such as by     upgrading them; or filter malformed requests by other means, such as configuration of an upstream proxy.
    (CVE-2022-24801)

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

It is, therefore, affected by a vulnerability as referenced in the ALAS2022-2022-046 advisory.

  - Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 22.2.0,     Twisted SSH client and server implement is able to accept an infinite amount of data for the peer's SSH     version identifier. This ends up with a buffer using all the available memory. The attach is a simple as     `nc -rv localhost 22 < /dev/zero`. A patch is available in version 22.2.0. There are currently no known     workarounds. (CVE-2022-21716)

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

The remote SUSE Linux SLES15 / SLES_SAP15 host has a package installed that is affected by a vulnerability as referenced in the SUSE-SU-2022:2297-1 advisory.

  - Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 22.2.0,     Twisted SSH client and server implement is able to accept an infinite amount of data for the peer's SSH     version identifier. This ends up with a buffer using all the available memory. The attach is a simple as     `nc -rv localhost 22 < /dev/zero`. A patch is available in version 22.2.0. There are currently no known     workarounds. (CVE-2022-21716)

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

The remote SUSE Linux SLES12 / SLES_SAP12 host has a package installed that is affected by a vulnerability as referenced in the SUSE-SU-2022:2117-1 advisory.

  - Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 22.2.0,     Twisted SSH client and server implement is able to accept an infinite amount of data for the peer's SSH     version identifier. This ends up with a buffer using all the available memory. The attach is a simple as     `nc -rv localhost 22 < /dev/zero`. A patch is available in version 22.2.0. There are currently no known     workarounds. (CVE-2022-21716)

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

The remote SUSE Linux SLES15 / SLES_SAP15 host has a package installed that is affected by a vulnerability as referenced in the SUSE-SU-2022:2070-1 advisory.

  - Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 22.2.0,     Twisted SSH client and server implement is able to accept an infinite amount of data for the peer's SSH     version identifier. This ends up with a buffer using all the available memory. The attach is a simple as     `nc -rv localhost 22 < /dev/zero`. A patch is available in version 22.2.0. There are currently no known     workarounds. (CVE-2022-21716)

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

It is, therefore, affected by a vulnerability as referenced in the ALAS-2022-1592 advisory.

  - Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 22.2.0,     Twisted SSH client and server implement is able to accept an infinite amount of data for the peer's SSH     version identifier. This ends up with a buffer using all the available memory. The attach is a simple as     `nc -rv localhost 22 < /dev/zero`. A patch is available in version 22.2.0. There are currently no known     workarounds. (CVE-2022-21716)

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

The remote Ubuntu 16.04 ESM / 22.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-5354-2 advisory.

    USN-5354-1 fixed vulnerabilities in Twisted. This update provides the

    corresponding updates for Ubuntu 14.04 ESM, Ubuntu 16.04 ESM and Ubuntu 22.04 LTS.



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

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

The remote Ubuntu 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5354-1 advisory.

    It was discovered that Twisted incorrectly filtered HTTP headers when clients

    are being redirected to another origin. A remote attacker could use this issue

    to obtain sensitive information. (CVE-2022-21712)

    It was discovered that Twisted incorrectly processed SSH handshake data on

    connection establishments. A remote attacker could use this issue to cause

    Twisted to crash, resulting in a denial of service. (CVE-2022-21716)

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.

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2022:0982 advisory.

    Twisted is a networking engine written in Python, supporting numerous     protocols. It contains a web server, numerous chat clients, chat servers,     mail servers and more.

    Security Fix(es):

    * SSH client and server denial of service during SSH handshake     (CVE-2022-21716)

    * Secret exposure in cross-origin redirects (CVE-2022-21712)

    For more details about the security issue(s), including the impact, a CVSS     score, acknowledgments, and other related information, refer to the CVE     page listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2022:0992 advisory.

    Twisted is a networking engine written in Python, supporting numerous     protocols. It contains a web server, numerous chat clients, chat servers,     mail servers and more.

    Security Fix(es):

    * Secret exposure in cross-origin redirects of python-twisted (CVE-2022-21712)
    * SSH client and server denial of service during SSH handshake     (CVE-2022-21716)

    For more details about the security issue(s), including the impact, a CVSS     score, acknowledgments, and other related information, refer to the CVE     page listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The remote Debian 9 host has packages installed that are affected by a vulnerability as referenced in the dla-2938 advisory.

  - Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 22.2.0,     Twisted SSH client and server implement is able to accept an infinite amount of data for the peer's SSH     version identifier. This ends up with a buffer using all the available memory. The attach is a simple as     `nc -rv localhost 22 < /dev/zero`. A patch is available in version 22.2.0. There are currently no known     workarounds. (CVE-2022-21716)

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

ID	Name	Product	Family	Severity
173089	Amazon Linux 2023 : python3-twisted, python3-twisted+tls (ALAS2023-2023-056)	Nessus	Amazon Linux Local Security Checks	high
169834	GLSA-202301-02 : Twisted: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	high
168547	Amazon Linux 2022 : python-twisted (ALAS2022-2022-231)	Nessus	Amazon Linux Local Security Checks	high
164764	Amazon Linux 2022 : (ALAS2022-2022-046)	Nessus	Amazon Linux Local Security Checks	high
162929	SUSE SLES15 Security Update : python-Twisted (SUSE-SU-2022:2297-1)	Nessus	SuSE Local Security Checks	high
162472	SUSE SLES12 Security Update : python-Twisted (SUSE-SU-2022:2117-1)	Nessus	SuSE Local Security Checks	high
162237	SUSE SLES15 Security Update : python-Twisted (SUSE-SU-2022:2070-1)	Nessus	SuSE Local Security Checks	high
161994	Amazon Linux AMI : python-twisted-conch (ALAS-2022-1592)	Nessus	Amazon Linux Local Security Checks	high
160588	Ubuntu 16.04 ESM / 22.04 LTS : Twisted vulnerability (USN-5354-2)	Nessus	Ubuntu Local Security Checks	high
159346	Ubuntu 18.04 LTS / 20.04 LTS : Twisted vulnerabilities (USN-5354-1)	Nessus	Ubuntu Local Security Checks	high
159214	RHEL 8 : Red Hat OpenStack Platform 16.1 (python-twisted) (RHSA-2022:0982)	Nessus	Red Hat Local Security Checks	high
159201	RHEL 8 : Red Hat OpenStack Platform 16.2 (python-twisted) (RHSA-2022:0992)	Nessus	Red Hat Local Security Checks	high
158698	Debian DLA-2938-1 : twisted - LTS security update	Nessus	Debian Local Security Checks	high

Detections

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CVE-2022-21716

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Tenable Plugins

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