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Privileges Required
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CVE-2024-4418

Disclosure Date: May 08, 2024
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Description

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.

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CVSS V3 Severity and Metrics
Base Score:
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Impact Score:
Unknown
Exploitability Score:
Unknown
Vector:
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Attack Vector (AV):
Unknown
Attack Complexity (AC):
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Privileges Required (PR):
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User Interaction (UI):
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Scope (S):
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Confidentiality (C):
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Integrity (I):
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Availability (A):
Unknown

General Information

Vendors

  • Red Hat

Products

  • Red Hat Enterprise Linux 8,
  • Red Hat Enterprise Linux 9,
  • Red Hat Enterprise Linux 9.2 Extended Update Support,
  • Red Hat Enterprise Linux 6,
  • Red Hat Enterprise Linux 7,
  • Red Hat Enterprise Linux 8 Advanced Virtualization
Technical Analysis