Allocation of Resources Without Limits or Throttling Affecting os-vif package, versions [1.15.0,1.15.2)[1.16.0,1.17.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published2 May 2024
- disclosed24 May 2022
- creditJames Denton
Introduced: 24 May 2022
CVE-2019-15753 (opens in a new tab)How to fix?
Upgrade os-vif to version 1.15.2, 1.17.0 or higher.
Overview
os-vif is an A library for plugging and unplugging virtual interfaces in OpenStack.
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling due to a hard-coded MAC aging time of 0, which disables MAC learning in Linuxbridge, forcing obligatory Ethernet flooding of non-local destinations. This not only impedes network performance but also allows users to potentially view the content of packets for instances belonging to other tenants sharing the same network. This issue occurs in PyRoute2.add() in internal/command/ip/linux/impl_pyroute2.py.
Note
Only deployments using the linuxbridge backend are affected.