What is CVE-2024-21606?

CVE-2024-21606 is a high-severity vulnerability in Juniper Junos, classified under Double Free. CVSS score: 7.5/10. Published 2024-01-12.

How severe is CVE-2024-21606?

High severity. CVSS v3 base score is 7.5 out of 10.

Double Free in Juniper Junos

CVE-2024-21606

A Double Free vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX Series allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS). In a remote access VPN scenario, if a "tcp-encap-profile" is configured and a sequence of specific packets is received, a flowd crash and restart will be observed. This issue affects Juniper Networks Junos OS on SRX Series: * All versions earlier than 20.4R3-S8; * 21.2 versions earlier than 21.2R3-S6; * 21.3 versions earlier than 21.3R3-S5; * 21.4 versions earlier than 21.4R3-S5; * 22.1 versions earlier than 22.1R3-S3; * 22.2 versions earlier than 22.2R3-S3; * 22.3 versions earlier than 22.3R3-S1; * 22.4 versions earlier than 22.4R2-S2, 22.4R3.

Vulnerability class: Double Free

EPSS: 0.006 (44.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Juniper Junos — versions 20.4, 21.2, 21.3
Juniper Srx100
Juniper Srx110
Juniper Srx1400
Juniper Srx1500
Juniper Srx1600
Juniper Srx210
Juniper Srx220
Juniper Srx2300
Juniper Srx240

Weakness classification (CWE)

CWE-415 — Double Free

References

sirt@juniper.net (vendor-advisory, Vendor Advisory)
sirt@juniper.net (technical-description, Third Party Advisory)

Frequently asked questions

What is CVE-2024-21606?: CVE-2024-21606 is a high-severity vulnerability in Juniper Junos, classified under Double Free. CVSS score: 7.5/10. Published 2024-01-12.
How severe is CVE-2024-21606?: High severity. CVSS v3 base score is 7.5 out of 10.