Use After Free Affecting nbdkit-xz-filter package, versions <0:1.24.0-5.module+el8.10.0+90377+6a12a345


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-ORACLE8-NBDKITXZFILTER-7446567
  • published13 Jul 2024
  • disclosed8 May 2024

Introduced: 8 May 2024

CVE-2024-4418  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Oracle:8 nbdkit-xz-filter to version 0:1.24.0-5.module+el8.10.0+90377+6a12a345 or higher.
This issue was patched in ELSA-2024-12604.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nbdkit-xz-filter package and not the nbdkit-xz-filter package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

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.

CVSS Scores

version 3.1