CVE-2012-4423

Libvirt vulnerability

CVSS

5.0

EPSS

3.7%

EPSS pct

89th

Exploited

No known

The virNetServerProgramDispatchCall function in libvirt before 0.10.2 allows remote attackers to cause a denial of service (NULL pointer dereference and segmentation fault) via an RPC call with (1) an event as the RPC number or (2) an RPC number whose value is in a "gap" in the RPC dispatch table.

Affected vendor

Redhat

Affected product

Libvirt

CVSS vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Published

2012-11-19

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to partial impact to availability.

Its EPSS score of 3.7% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 89% of all scored CVEs.

Check your external exposure to CVE-2012-4423

Confirm whether Redhat Libvirt is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2012-4423.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2012-4423

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