CVE-2019-5613

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…

published February 18, 2020

CVSS
—
EPSS
1%
Percentile
46.9
In the wild
Unconfirmed
What it is

⚠️ Missing a check can lead to mischievous packet reinjection! If not patched, it’s like letting an old guest back into the party without checking their invitation. 😲 Think of ipsec as a bouncer at a VIP event. If the bouncer forgets to check if someone is on the guest list, they might let an unwanted attendee back in, potentially disrupting the whole event! An attacker could exploit this flaw to resend an old packet and trigger actions repeatedly, leading to unexpected behavior or even denial of service in some scenarios. It's a sneaky way to churn out unwanted activities as if they were happening fresh when they’ve already occurred!

Put simply

Think of ipsec as a bouncer at a VIP event. If the bouncer forgets to check if someone is on the guest list, they might let an unwanted attendee back in, potentially disrupting the whole event! This vulnerability in FreeBSD's ipsec packet processor allows old packets to be accepted due to a missing check, enabling repeated actions based on higher-level protocols.

What to do

An attacker could exploit this flaw to resend an old packet and trigger actions repeatedly, leading to unexpected behavior or even denial of service in some scenarios. It's a sneaky way to churn out unwanted activities as if they were happening fresh when they’ve already occurred! Update FreeBSD to version 12.0-RELEASE-p13 or later to address this vulnerability. Regularly audit configuration settings to ensure this ipsec endpoint is properly secured against packet reinjections. You can handle this! Keep your systems up-to-date and you'll be a security hero in no time! 🦸‍♂️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00578 · 46.9th percentile
Published
2020-02-18T15:26Z
EPSS history
Timeline
  • 18 FEB 15:26Z
    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…
    cvelistv5