In FreeBSD 12.0-RELEASE before 12.0-RELEASE-p13, a missing check in the ipsec packet processor allows reinjection of an old packet to be accepted by the ipsec endpoint. Depending on the higher-level protocol in use over ipsec, this could allow an action to be repeated.
The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.
Link | Tags |
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https://security.FreeBSD.org/advisories/FreeBSD-SA-20:02.ipsec.asc | patch vendor advisory |