CVE-2023-22411: Junos OS: SRX Series: The flow processing daemon (flowd) will crash when Unified Policies are used with IPv6 and certain dynamic applications are rejected by the device
An Out-of-Bounds Write vulnerability in Flow Processing Daemon (flowd) of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause Denial of Service (DoS). On SRX Series devices using Unified Policies with IPv6, when a specific IPv6 packet goes through a dynamic-application filter which will generate an ICMP deny message, the flowd core is observed and the PFE is restarted. This issue affects: Juniper Networks Junos OS on SRX Series: 19.2 versions prior to 19.2R3-S6; 19.3 versions prior to 19.3R3-S6; 19.4 versions prior to 19.4R3-S9; 20.2 versions prior to 20.2R3-S5; 20.3 versions prior to 20.3R3-S4; 20.4 versions prior to 20.4R3-S3; 21.1 versions prior to 21.1R3; 21.2 versions prior to 21.2R3; 21.3 versions prior to 21.3R2; 21.4 versions prior to 21.4R2.
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Frequently Asked Questions
What is the severity of CVE-2023-22411?
CVE-2023-22411 is categorized as a high severity vulnerability due to its potential to cause a Denial of Service (DoS).
How do I fix CVE-2023-22411?
To remediate CVE-2023-22411, users should upgrade to a patched version of Juniper Networks Junos OS as specified in vendor advisories.
What products are affected by CVE-2023-22411?
CVE-2023-22411 affects multiple versions of Juniper Networks Junos OS, specifically versions 19.2, 19.3, 19.4, 20.2, 20.3, 20.4, and 21.x.
Can CVE-2023-22411 be exploited remotely?
Yes, CVE-2023-22411 can be exploited by unauthenticated, network-based attackers, highlighting a significant security risk.
What types of attacks can CVE-2023-22411 facilitate?
CVE-2023-22411 can facilitate Denial of Service (DoS) attacks, affecting the availability of the networks that utilize vulnerable Junos OS devices.