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.fpc.pic.
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.
References
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.fpc.pic.
This issue affects:
Juniper Networks Junos OS on SRX 5000 Series
References