Waitress is a Web Server Gateway Interface server for Python 2 and 3. Waitress versions 2.1.0 and 2.1.1 may terminate early due to a thread closing a socket while the main thread is about to call select(). This will lead to the main thread raising an exception that is not handled and then causing the entire application to be killed. This issue has been fixed in Waitress 2.1.2 by no longer allowing the WSGI thread to close the socket. Instead, that is always delegated to the main thread. There is no work-around for this issue. However, users using waitress behind a reverse proxy server are less likely to have issues if the reverse proxy always reads the full response.

The version of python-waitress installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2022-31015 advisory.

  - Waitress is a Web Server Gateway Interface server for Python 2 and 3. Waitress versions 2.1.0 and 2.1.1     May terminate early due to a thread closing a socket while the main thread is about to call select(). This     will lead to the main thread raising an exception that is not handled and then causing the entire     application to be killed. This issue has been fixed in Waitress 2.1.2 by no longer allowing the WSGI     thread to close the socket. Instead, that is always delegated to the main thread. There is no work-around     for this issue. However, users using waitress behind a reverse proxy server are less likely to have issues     if the reverse proxy always reads the full response. (CVE-2022-31015)

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

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - Waitress is a Web Server Gateway Interface server for Python 2 and 3. Waitress versions 2.1.0 and 2.1.1
    may terminate early due to a thread closing a socket while the main thread is about to call select(). This
    will lead to the main thread raising an exception that is not handled and then causing the entire
    application to be killed. This issue has been fixed in Waitress 2.1.2 by no longer allowing the WSGI
    thread to close the socket. Instead, that is always delegated to the main thread. There is no work-around
    for this issue. However, users using waitress behind a reverse proxy server are less likely to have issues
    if the reverse proxy always reads the full response. (CVE-2022-31015)

ID	Name	Product	Family	Severity
295739	Azure Linux 3.0 Security Update: python-waitress (CVE-2022-31015)	Nessus	Azure Linux Local Security Checks	high
414309	SCA: security update for waitress (GHSA-f5x9-8jwc-25rw)	Tenable Cloud Security	SCA Checks	medium
414309	SCA: security update for waitress (GHSA-f5x9-8jwc-25rw)	Tenable Self-Hosted Container Security	SCA Checks	medium
406724	Alpine: multiple py3-waitress packages: security update to 2.1.2-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	high
406724	Alpine: multiple py3-waitress packages: security update to 2.1.2-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	high

Detections

Analytics

CVE-2022-31015

high

Tenable Plugins

high

medium

medium

high

high