Junos OS: MX Series with SPC3, and SRX Series: If specific IPsec parameters are negotiated iked will crash due to a memory leak

Summary

A Missing Release of Memory after Effective Lifetime vulnerability in the IKE daemon (iked) of Juniper Networks Junos OS on MX Series with SPC3, and SRX Series allows an administratively adjacent attacker which is able to successfully establish IPsec tunnels to cause a Denial of Service (DoS). If specific values for the IPsec parameters local-ip, remote-ip, remote ike-id, and traffic selectors are sent from the peer, a memory leak occurs during every IPsec SA rekey which is carried out with a specific message sequence. This will eventually result in an iked process crash and restart. The iked process memory consumption can be checked using the below command:   user@host> show system processes extensive | grep iked           PID USERNAME   PRI NICE   SIZE   RES   STATE   C TIME WCPU COMMAND           56903 root       31   0     4016M 2543M CPU0   0 2:10 10.50% iked This issue affects Juniper Networks Junos OS: • All versions earlier than 20.4R3-S9; • 21.2 versions earlier than 21.2R3-S7; • 21.3 versions earlier than 21.3R3-S5; • 21.4 versions earlier than 21.4R3-S4; • 22.1 versions earlier than 22.1R3-S3; • 22.2 versions earlier than 22.2R3-S2; • 22.3 versions earlier than 22.3R3; • 22.4 versions earlier than 22.4R3; • 23.2 versions earlier than 23.2R1-S2, 23.2R2.

Timeline

1. Apr 12, 2024, 2:55 PM UTCCVE published
2. Apr 17, 2024, 5:18 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: no · Technical impact: partial

3. Aug 1, 2024, 10:27 PM UTCRecord last updated

Affected versions

• Juniper Networks Junos OS

  fixed in 20.4R3-S9; From 21.2 · fixed in 21.2R3-S7; From 21.3 · fixed in 21.3R3-S5; From 21.4 · fixed in 21.4R3-S4; From 22.1 · fixed in 22.1R3-S3; From 22.2 · fixed in 22.2R3-S2; From 22.3 · fixed in 22.3R3; From 22.4 · fixed in 22.4R3

References 2