Arbitrary Code Execution Affecting joblib package, versions [,1.1.1)


Severity

Recommended
0.0
critical
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Proof of concept
EPSS
0.5% (78th percentile)

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  • Snyk IDSNYK-PYTHON-JOBLIB-3027033
  • published25 Sept 2022
  • disclosed19 Sept 2022
  • creditJim Lin

Introduced: 19 Sep 2022

CVE-2022-21797  (opens in a new tab)
CWE-94  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade joblib to version 1.1.1 or higher.

Overview

joblib is a Lightweight pipelining with Python functions

Affected versions of this package are vulnerable to Arbitrary Code Execution via the pre_dispatch flag in Parallel() class due to the eval() statement.

PoC

def f():
    return 1
p = Parallel(n_jobs=3, pre_dispatch="sys.exit(0)")
p(delayed(f)() for i in range(10)) # this will cause the system to exit

CVSS Scores

version 3.1