CVE-2024-21606

High

Description

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.

SeverityHigh
CVSS7.5
Exploit probability—
ProductJuniper Junos
PublishedJan 12, 2024
First seenJan 12, 2024
Weakness typeCWE-415CWE-415

How to fix

Update
  • juniper junos20.4 or later

Affected products

ProductAffected versionsFixed in
juniper junosv < 20.4, 20.4, 21.2, 21.3, 21.4, 22.1, 22.2, 22.3, 22.420.4

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