RHSA-2021:4324

Vulnerability from csaf_redhat - Published: 2021-11-09 17:57 - Updated: 2025-11-21 18:26
Summary
Red Hat Security Advisory: python-psutil security update
Severity
Moderate
Notes
Topic: An update for python-psutil is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: psutil is a module providing an interface for retrieving information on all running processes and system utilization (CPU, memory, disks, network, users) in a portable way by using Python. Security Fix(es): * python-psutil: double free because of refcount mishandling (CVE-2019-18874) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.5 Release Notes linked from the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
CVE-2019-18874

A double free issue has been discovered in python-psutil because of the mishandling of refcounts while converting system data into Python objects in functions like psutil_disk_partitions(), psutil_users(), psutil_net_if_addrs(), and others. In particular cases, a local attacker may be able to get code execution by manipulating system resources that python-psutil then tries to convert.

7.0 (High)
CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-416 - Use After Free
Vendor Fix For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 https://access.redhat.com/errata/RHSA-2021:4324
References
Acknowledgments
Red Hat Riccardo Schirone
To clipboard 

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          "text": "A double free issue has been discovered in python-psutil because of the mishandling of refcounts while converting system data into Python objects in functions like psutil_disk_partitions(), psutil_users(), psutil_net_if_addrs(), and others. In particular cases, a local attacker may be able to get code execution by manipulating system resources that python-psutil then tries to convert.",
          "title": "Vulnerability description"
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          "text": "python-psutil: Double free because of refcount mishandling",
          "title": "Vulnerability summary"
        },
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          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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          "AppStream-8.5.0.GA:python3-psutil-debuginfo-0:5.4.3-11.el8.s390x",
          "AppStream-8.5.0.GA:python3-psutil-debuginfo-0:5.4.3-11.el8.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2019-18874"
        },
        {
          "category": "external",
          "summary": "RHBZ#1772014",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1772014"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2019-18874",
          "url": "https://www.cve.org/CVERecord?id=CVE-2019-18874"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2019-18874",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-18874"
        }
      ],
      "release_date": "2019-11-07T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2021-11-09T17:57:23+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
          "product_ids": [
            "AppStream-8.5.0.GA:python-psutil-0:5.4.3-11.el8.src",
            "AppStream-8.5.0.GA:python-psutil-debugsource-0:5.4.3-11.el8.aarch64",
            "AppStream-8.5.0.GA:python-psutil-debugsource-0:5.4.3-11.el8.ppc64le",
            "AppStream-8.5.0.GA:python-psutil-debugsource-0:5.4.3-11.el8.s390x",
            "AppStream-8.5.0.GA:python-psutil-debugsource-0:5.4.3-11.el8.x86_64",
            "AppStream-8.5.0.GA:python3-psutil-0:5.4.3-11.el8.aarch64",
            "AppStream-8.5.0.GA:python3-psutil-0:5.4.3-11.el8.ppc64le",
            "AppStream-8.5.0.GA:python3-psutil-0:5.4.3-11.el8.s390x",
            "AppStream-8.5.0.GA:python3-psutil-0:5.4.3-11.el8.x86_64",
            "AppStream-8.5.0.GA:python3-psutil-debuginfo-0:5.4.3-11.el8.aarch64",
            "AppStream-8.5.0.GA:python3-psutil-debuginfo-0:5.4.3-11.el8.ppc64le",
            "AppStream-8.5.0.GA:python3-psutil-debuginfo-0:5.4.3-11.el8.s390x",
            "AppStream-8.5.0.GA:python3-psutil-debuginfo-0:5.4.3-11.el8.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2021:4324"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.0,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.0"
          },
          "products": [
            "AppStream-8.5.0.GA:python-psutil-0:5.4.3-11.el8.src",
            "AppStream-8.5.0.GA:python-psutil-debugsource-0:5.4.3-11.el8.aarch64",
            "AppStream-8.5.0.GA:python-psutil-debugsource-0:5.4.3-11.el8.ppc64le",
            "AppStream-8.5.0.GA:python-psutil-debugsource-0:5.4.3-11.el8.s390x",
            "AppStream-8.5.0.GA:python-psutil-debugsource-0:5.4.3-11.el8.x86_64",
            "AppStream-8.5.0.GA:python3-psutil-0:5.4.3-11.el8.aarch64",
            "AppStream-8.5.0.GA:python3-psutil-0:5.4.3-11.el8.ppc64le",
            "AppStream-8.5.0.GA:python3-psutil-0:5.4.3-11.el8.s390x",
            "AppStream-8.5.0.GA:python3-psutil-0:5.4.3-11.el8.x86_64",
            "AppStream-8.5.0.GA:python3-psutil-debuginfo-0:5.4.3-11.el8.aarch64",
            "AppStream-8.5.0.GA:python3-psutil-debuginfo-0:5.4.3-11.el8.ppc64le",
            "AppStream-8.5.0.GA:python3-psutil-debuginfo-0:5.4.3-11.el8.s390x",
            "AppStream-8.5.0.GA:python3-psutil-debuginfo-0:5.4.3-11.el8.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "python-psutil: Double free because of refcount mishandling"
    }
  ]
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.