CVE-2024-4418 (GCVE-0-2024-4418)

Vulnerability from cvelistv5 – Published: 2024-05-08 03:03 – Updated: 2026-02-25 20:31
VLAI
Title
Libvirt: stack use-after-free in virnetclientioeventloop()
Summary
A race condition leading to a stack use-after-free flaw was found in libvirt. Due to a bad assumption in the virNetClientIOEventLoop() method, the `data` pointer to a stack-allocated virNetClientIOEventData structure ended up being used in the virNetClientIOEventFD callback while the data pointer's stack frame was concurrently being "freed" when returning from virNetClientIOEventLoop(). The 'virtproxyd' daemon can be used to trigger requests. If libvirt is configured with fine-grained access control, this issue, in theory, allows a user to escape their otherwise limited access. This flaw allows a local, unprivileged user to access virtproxyd without authenticating. Remote users would need to authenticate before they could access it.
Severity
6.2 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-562 - Return of Stack Variable Address
Assigner
References
Impacted products
Vendor Product Version
Affected: 0 , < 10.4.0 (semver)
Red Hat Red Hat Enterprise Linux 8 Unaffected: 8100020240606142719.489197e6 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
    cpe:/a:redhat:enterprise_linux:8::crb
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Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:10.0.0-6.6.el9_4 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::crb
    cpe:/a:redhat:enterprise_linux:9::appstream
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Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support Unaffected: 0:9.0.0-10.7.el9_2 , < * (rpm)
    cpe:/a:redhat:rhel_eus:9.2::appstream
    cpe:/a:redhat:rhel_eus:9.2::crb
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
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Red Hat Red Hat Enterprise Linux 8 Advanced Virtualization     cpe:/a:redhat:advanced_virtualization:8::el8
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Date Public
2024-05-02 00:00
Credits
Red Hat would like to thank Martin Širokov for reporting this issue.
Show details on NVD website
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Due to a bad assumption in the virNetClientIOEventLoop() method, the `data` pointer to a stack-allocated virNetClientIOEventData structure ended up being used in the virNetClientIOEventFD callback while the data pointer\u0027s stack frame was concurrently being \\\"freed\\\" when returning from virNetClientIOEventLoop(). The \u0027virtproxyd\u0027 daemon can be used to trigger requests. If libvirt is configured with fine-grained access control, this issue, in theory, allows a user to escape their otherwise limited access. This flaw allows a local, unprivileged user to access virtproxyd without authenticating. 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      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.