CVE-2022-42919 Vulnerability Analysis & Exploit Details

CVE-2022-42919
Vulnerability Scoring

7.8
/10
Very High Risk

Highly exploitable, CVE-2022-42919 poses a critical security risk that could lead to severe breaches.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Local
    Vulnerability requires local system access.
  • Privileges Required: Low
    Some privileges are necessary to exploit the vulnerability.
  • Scope: Unchanged
    Exploit remains within the originally vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2022-42919 Details

Status: Modified

Last updated: 🕖 21 Nov 2024, 07:25 UTC
Originally published on: 🕛 07 Nov 2022, 00:15 UTC

Time between publication and last update: 745 days

CVSS Release: version 3

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVE-2022-42919 Vulnerability Summary

CVE-2022-42919: Python 3.9.x before 3.9.16 and 3.10.x before 3.10.9 on Linux allows local privilege escalation in a non-default configuration. The Python multiprocessing library, when used with the forkserver start method on Linux, allows pickles to be deserialized from any user in the same machine local network namespace, which in many system configurations means any user on the same machine. Pickles can execute arbitrary code. Thus, this allows for local user privilege escalation to the user that any forkserver process is running as. Setting multiprocessing.util.abstract_sockets_supported to False is a workaround. The forkserver start method for multiprocessing is not the default start method. This issue is Linux specific because only Linux supports abstract namespace sockets. CPython before 3.9 does not make use of Linux abstract namespace sockets by default. Support for users manually specifying an abstract namespace socket was added as a bugfix in 3.7.8 and 3.8.3, but users would need to make specific uncommon API calls in order to do that in CPython before 3.9.

Assessing the Risk of CVE-2022-42919

Access Complexity Graph

The exploitability of CVE-2022-42919 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2022-42919

CVE-2022-42919 presents an accessible attack vector with minimal effort required. Restricting access controls and implementing security updates are critical to reducing exploitation risks.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2022-42919, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2022-42919, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: High
    Exploiting CVE-2022-42919 can result in unauthorized access to sensitive data, severely compromising data privacy.
  • Integrity: High
    CVE-2022-42919 could allow unauthorized modifications to data, potentially affecting system reliability and trust.
  • Availability: High
    CVE-2022-42919 can disrupt system operations, potentially causing complete denial of service (DoS).

Exploit Prediction Scoring System (EPSS)

The EPSS score estimates the probability that this vulnerability will be exploited in the near future.

EPSS Score: 0.044% (probability of exploit)

EPSS Percentile: 12.55% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 87.45% of others.

CVE-2022-42919 References

External References

CWE Common Weakness Enumeration

NVD-CWE-noinfo

Vulnerable Configurations

  • cpe:2.3:a:python:python:3.7.3:-:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.7.3:-:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.7.3:rc1:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.7.3:rc1:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.7.4:-:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.7.4:-:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.7.4:rc1:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.7.4:rc1:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.7.4:rc2:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.7.4:rc2:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.7.5:-:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.7.5:-:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.7.5:rc1:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.7.5:rc1:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.7.6:-:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.7.6:-:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.7.6:rc1:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.7.6:rc1:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.7.7:-:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.7.7:-:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.7.7:rc1:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.7.7:rc1:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.7.8:-:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.7.8:-:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.7.8:rc1:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.7.8:rc1:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.7.9:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.7.9:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.7.10:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.7.10:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.7.11:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.7.11:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.7.12:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.7.12:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.7.13:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.7.13:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.7.14:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.7.14:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.7.15:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.7.15:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.8.3:-:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.8.3:-:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.8.3:rc1:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.8.3:rc1:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.8.4:-:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.8.4:-:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.8.4:rc1:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.8.4:rc1:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.8.5:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.8.5:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.8.6:-:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.8.6:-:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.8.6:rc1:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.8.6:rc1:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.8.7:-:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.8.7:-:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.8.7:rc1:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.8.7:rc1:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.8.8:-:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.8.8:-:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.8.8:rc1:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.8.8:rc1:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.8.9:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.8.9:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.8.10:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.8.10:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.8.11:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.8.11:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.8.12:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.8.12:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.8.13:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.8.13:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.8.14:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.8.14:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.8.15:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.8.15:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.0:-:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.0:-:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.0:rc1:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.0:rc1:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.0:rc2:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.0:rc2:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.0:beta1:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.0:beta1:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.0:beta2:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.0:beta2:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.0:beta3:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.0:beta3:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.0:beta4:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.0:beta4:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.0:beta5:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.0:beta5:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.0:alpha1:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.0:alpha1:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.0:alpha2:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.0:alpha2:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.0:alpha3:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.0:alpha3:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.0:alpha4:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.0:alpha4:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.0:alpha5:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.0:alpha5:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.0:alpha6:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.0:alpha6:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.1:-:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.1:-:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.1:rc1:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.1:rc1:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.2:-:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.2:-:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.2:rc1:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.2:rc1:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.3:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.3:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.4:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.4:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.5:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.5:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.6:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.6:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.7:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.7:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.8:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.8:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.9:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.9:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.10:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.10:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.11:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.11:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.12:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.12:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.13:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.13:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.14:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.14:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.9.15:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.9.15:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.10.0:-:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.10.0:-:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.10.0:rc1:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.10.0:rc1:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.10.0:rc2:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.10.0:rc2:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.10.0:beta1:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.10.0:beta1:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.10.0:beta2:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.10.0:beta2:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.10.0:beta3:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.10.0:beta3:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.10.0:beta4:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.10.0:beta4:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.10.0:alpha1:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.10.0:alpha1:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.10.0:alpha2:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.10.0:alpha2:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.10.0:alpha3:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.10.0:alpha3:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.10.0:alpha4:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.10.0:alpha4:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.10.0:alpha5:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.10.0:alpha5:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.10.0:alpha6:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.10.0:alpha6:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.10.0:alpha7:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.10.0:alpha7:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.10.1:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.10.1:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.10.2:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.10.2:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.10.3:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.10.3:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.10.4:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.10.4:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.10.5:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.10.5:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.10.6:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.10.6:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.10.7:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.10.7:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.10.8:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.10.8:*:*:*:*:*:*:*
  • cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
    cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
  • cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
    cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
  • cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
    cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*

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