Is CVE-2022-42917 being exploited?

No public exploit is currently tracked.

How severe is CVE-2022-42917?

CVE-2022-42917 has a CVSS v3 severity of MEDIUM (6.7).

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CVE-2022-42917

Description

In FRRouting FRR before 8.5, the service user (usually frr) can escalate its privileges to root by monitoring the configuration directory (/etc/frr) and replacing config files upon creation with, for example, symlinks to change the ownership of arbitrary files. This is a TOCTOU Race Condition caused by a combination of touch and chown.