Juniper Networks, Inc. AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Juniper Networks, Inc. CWE-122

A Heap-based Buffer Overflow vulnerability in the Network Services Daemon (NSD) of Juniper Networks Junos OS allows authenticated, low privileged, local attacker to cause a Denial of Service (DoS).

On an SRX 5000 Series device, when executing a specific command repeatedly, memory is corrupted, which leads to a Flow Processing Daemon (flowd) crash.

The NSD process has to be restarted to restore services.

If this issue occurs, it can be checked with the following command:

user@host> request security policies check
The following log message can also be observed:

Error: policies are out of sync for PFE node<number>.fpc<number>.pic<number>.
This issue affects:

Juniper Networks Junos OS on SRX 5000 Series



  *  All versions earlier than 20.4R3-S6;
  *  21.1 versions earlier than 21.1R3-S5;
  *  21.2 versions earlier than 21.2R3-S4;
  *  21.3 versions earlier than 21.3R3-S3;
  *  21.4 versions earlier than 21.4R3-S3;
  *  22.1 versions earlier than 22.1R3-S1;
  *  22.2 versions earlier than 22.2R3;
  *  22.3 versions earlier than 22.3R2.

Juniper Networks, Inc. https://supportportal.juniper.net/JSA75733 [No types assigned]

Juniper Networks, Inc. https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N [No types assigned]