Junos OS: SRX Series: A flowd core occurs when running a low privileged CLI command

Summary

An Out-of-bounds Read vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX Series allows a local, authenticated attacker with low privileges, to cause a Denial of Service (DoS). If a low privileged user executes a specific CLI command, flowd which is responsible for traffic forwarding in SRX crashes and generates a core dump. This will cause temporary traffic interruption until the flowd process is restarted automatically. Continued execution of this command will lead to a sustained DoS. This issue affects Juniper Networks Junos OS on SRX Series: All versions prior to 20.2R3-S7; 20.3 version 20.3R1 and later versions; 20.4 versions prior to 20.4R3-S6; 21.1 versions prior to 21.1R3-S5; 21.2 versions prior to 21.2R3-S4; 21.3 versions prior to 21.3R3-S4; 21.4 versions prior to 21.4R3-S3; 22.1 versions prior to 22.1R3-S1; 22.2 versions prior to 22.2R3; 22.3 versions prior to 22.3R2; 22.4 versions prior to 22.4R1-S1, 22.4R2.

Timeline

1. Jul 14, 2023, 4:26 PM UTCCVE published
2. Oct 22, 2024, 2:28 PM UTCCISA SSVC assessment

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

3. Oct 22, 2024, 2:31 PM UTCRecord last updated

Affected versions

• Juniper Networks Junos OS

  fixed in 20.2R3-S7; From 20.3; From 20.4 · fixed in 20.4R3-S6; From 21.1 · fixed in 21.1R3-S5; From 21.2 · fixed in 21.2R3-S4; From 21.3 · fixed in 21.3R3-S4; From 21.4 · fixed in 21.4R3-S3; From 22.1 · fixed in 22.1R3-S1; From 22.2 · fixed in 22.2R3; From 22.3 · fixed in 22.3R2

References 1