QID 43965

Juniper Junos is the network operating system used in Juniper Networks hardware systems.

An Improper Check or Handling of Exceptional Conditions vulnerability in the IPsec library of Juniper Networks Junos OS allows a network-based, unauthenticated attacker to cause Denial of Service (DoS).

Affected Junos versions:
All versions prior to 19.4R3-S9
20.1 version 20.1R3-S5 and later versions
20.2 versions prior to 20.2R3-S5
20.3 versions prior to 20.3R3-S5
20.4 versions prior to 20.4R3-S4
21.1 versions prior to 21.1R3-S3
21.2 versions prior to 21.2R3-S1
21.3 versions prior to 21.3R3
21.4 versions prior to 21.4R2-S1, 21.4R3
22.1 versions prior to 22.1R2
QID detection logic: (Authenticated)
It checks for vulnerable Junos OS version.

Note: This QID does not checks for IPsec VPN configuration hence QID is set to practice.

Successful exploitation allows a network-based, unauthenticated attacker to cause Denial of Service (DoS).