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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2022.0346
                          ipython security update
                              25 January 2022

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           ipython
Publisher:         Debian
Operating System:  Debian GNU/Linux
                   UNIX variants (UNIX, Linux, OSX)
                   Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2022-21699  

Original Bulletin: 
   https://lists.debian.org/debian-lts-announce/2022/01/msg00021.html

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Debian. It is recommended that administrators 
         running ipython check for an updated version of the software for 
         their operating system.

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Debian LTS Advisory DLA-2896-1                debian-lts@lists.debian.org
https://www.debian.org/lts/security/                           Chris Lamb
January 24, 2022                              https://wiki.debian.org/LTS
- - -------------------------------------------------------------------------

Package        : ipython
Version        : 5.1.0-3+deb9u1
CVE ID         : CVE-2022-21699
Debian Bug     : #1004122

It was discovered that there was a potential arbitrary code execution
vulnerability in IPython, the interactive Python shell.

This issue stemmed from IPython executing untrusted files in the
current working directory. According to upstream:

  Almost all versions of IPython looks for configuration and profiles
  in current working directory. Since IPython was developed before
  pip and environments existed, it was used a convenient way to load
  code/packages in a project dependant way.

  In 2022, it is not necessary anymore, and can lead to confusing
  behavior where for example cloning a repository and starting
  IPython or loading a notebook from any Jupyter-Compatible interface
  that has ipython set as a kernel can lead to code execution.

To address this problem, the current working directory is no longer
searched for profiles or configuration files.

For Debian 9 "Stretch", this problem has been fixed in version
5.1.0-3+deb9u1.

We recommend that you upgrade your ipython packages.

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

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

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===========================================================================
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