Waitress is a Web Server Gateway Interface server for Python 2 and 3. When a remote client closes the connection before waitress has had the opportunity to call getpeername() waitress won't correctly clean up the connection leading to the main thread attempting to write to a socket that no longer exists, but not removing it from the list of sockets to attempt to process. This leads to a busy-loop calling the write function. A remote attacker could run waitress out of available sockets with very little resources required. Waitress 3.0.1 contains fixes that remove the race condition.

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2024:9618 advisory.

    Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution     designed for on-premise or private cloud deployments.

    This advisory contains the RPM packages for Red Hat OpenShift Container Platform 4.16.23. See the     following advisory for the container images for this release:

    https://access.redhat.com/errata/RHSA-2024:9615

    Security Fix(es):

    * waitress: python-waitress: request processing race condition in HTTP     pipelining with invalid first request (CVE-2024-49768)
    * waitress: Waitress has a denial of service leading to high CPU     usage/resource exhaustion (CVE-2024-49769)

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

    All OpenShift Container Platform 4.16 users are advised to upgrade to these updated packages and images     when they are available in the appropriate release channel. To check for available updates, use the     OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at     https://docs.openshift.com/container-platform/4.16/updating/updating_a_cluster/updating-cluster-cli.html

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 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2024:9623 advisory.

    Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution     designed for on-premise or private cloud deployments.

    This advisory contains the RPM packages for Red Hat OpenShift Container Platform 4.14.41. See the     following advisory for the container images for this release:

    https://access.redhat.com/errata/RHSA-2024:9620

    Security Fix(es):

    * waitress: python-waitress: request processing race condition in HTTP     pipelining with invalid first request (CVE-2024-49768)
    * waitress: Waitress has a denial of service leading to high CPU     usage/resource exhaustion (CVE-2024-49769)

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

    All OpenShift Container Platform 4.14 users are advised to upgrade to these updated packages and images     when they are available in the appropriate release channel. To check for available updates, use the     OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at     https://docs.openshift.com/container-platform/4.14/updating/updating_a_cluster/updating-cluster-cli.html

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 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2024:9613 advisory.

    Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution     designed for on-premise or private cloud deployments.

    This advisory contains the RPM packages for Red Hat OpenShift Container Platform 4.17.5. See the following     advisory for the container images for this release:

    https://access.redhat.com/errata/RHSA-2024:9610

    Security Fix(es):

    * waitress: python-waitress: request processing race condition in HTTP     pipelining with invalid first request (CVE-2024-49768)
    * waitress: Waitress has a denial of service leading to high CPU     usage/resource exhaustion (CVE-2024-49769)

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

    All OpenShift Container Platform 4.17 users are advised to upgrade to these updated packages and images     when they are available in the appropriate release channel. To check for available updates, use the     OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at     https://docs.openshift.com/container-platform/4.17/updating/updating_a_cluster/updating-cluster-cli.html

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 Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS / 24.10 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7115-1 advisory.

    It was discovered that Waitress could process follow up requests when receiving a specially crafted     message. An attacker could use this issue to have the server process inconsistent client requests. This     issue only affected Ubuntu 24.04 LTS and Ubuntu 24.10. (CVE-2024-49768)

    Dylan Jay discovered that Waitress could be lead to write to an unexisting socket after closing the remote     connection. An attacker could use this issue to increase resource utilization leading to a denial of     service. (CVE-2024-49769)

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 Debian 11 host has packages installed that are affected by a vulnerability as referenced in the dla-3955 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-3955-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                          Adrian Bunk     November 16, 2024                             https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : waitress     Version        : 1.4.4-1.1+deb11u2     CVE ID         : CVE-2024-49769     Debian Bug     : 1086468

    DoS due to resource exhaustion has been fixed in waitress, a Python Web     Server Gateway Interface.

    For Debian 11 bullseye, this problem has been fixed in version     1.4.4-1.1+deb11u2.

    We recommend that you upgrade your waitress packages.

    For the detailed security status of waitress please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/waitress

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian 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 Fedora 41 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2024-157678aad0 advisory.

    Update to version 3.0.1, which resolves CVE-2024-49768 and CVE-2024-49769.

Tenable has extracted the preceding description block directly from the Fedora 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 SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2024:3876-1 advisory.

    - CVE-2024-49768: Fixed request processing race condition in HTTP pipelining with invalid first request     when lookahead is enabled (bsc#1232556)
    - CVE-2024-49769: Fixed incorrect connection clean up leads to a busy-loop and resource exhaustion     (bsc#1232554)

Tenable has extracted the preceding description block directly from the SUSE 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	Severity
211789	RHEL 9 : OpenShift Container Platform 4.16.23 (RHSA-2024:9618)	Nessus	Red Hat Local Security Checks	medium
211788	RHEL 9 : OpenShift Container Platform 4.14.41 (RHSA-2024:9623)	Nessus	Red Hat Local Security Checks	medium
211783	RHEL 9 : OpenShift Container Platform 4.17.5 (RHSA-2024:9613)	Nessus	Red Hat Local Security Checks	medium
211585	Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS / 24.10 : Waitress vulnerabilities (USN-7115-1)	Nessus	Ubuntu Local Security Checks	medium
211494	Debian dla-3955 : python-waitress-doc - security update	Nessus	Debian Local Security Checks	high
211480	Fedora 41 : python-waitress (2024-157678aad0)	Nessus	Fedora Local Security Checks	medium
210119	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : python-waitress (SUSE-SU-2024:3876-1)	Nessus	SuSE Local Security Checks	medium

Detections

Analytics

CVE-2024-49769

high

Tenable Plugins

medium

medium

medium

medium

high

medium

medium