CVE-2021-0283

Vulnerability Summary

A buffer overflow vulnerability in the TCP/IP stack of Juniper Networks Junos OS allows an malicious user to send specific sequences of packets to the device thereby causing a Denial of Service (DoS). By repeatedly sending these sequences of packets to the device, an attacker can sustain the Denial of Service (DoS) condition. The device will abnormally shut down as a result of these sent packets. A potential indicator of compromise will be the following message in the log files: "eventd[13955]: SYSTEM_ABNORMAL_SHUTDOWN: System abnormally shut down" These issue are only triggered by traffic destined to the device. Transit traffic will not trigger these issues. This issue affects: Juniper Networks Junos OS 12.3 versions before 12.3R12-S19; 15.1 versions before 15.1R7-S10; 16.1 version 16.1R1 and later versions; 16.2 version 16.2R1 and later versions; 17.1 version 17.1R1 and later versions; 17.2 version 17.2R1 and later versions; 17.3 versions before 17.3R3-S12; 17.4 version 17.4R1 and later versions; 18.1 versions before 18.1R3-S13; 18.2 version 18.2R1 and later versions; 18.3 versions before 18.3R3-S5; 18.4 versions before 18.4R2-S9, 18.4R3-S9; 19.1 versions before 19.1R3-S6; 19.2 versions before 19.2R1-S7, 19.2R3-S3; 19.3 versions before 19.3R2-S7, 19.3R3-S3; 19.4 versions before 19.4R3-S5; 20.1 versions before 20.1R2-S2, 20.1R3-S1; 20.2 versions before 20.2R3-S2; 20.3 versions before 20.3R3; 20.4 versions before 20.4R2-S1, 20.4R3; 21.1 versions before 21.1R1-S1, 21.1R2; 21.2 versions before 21.2R1-S1, 21.2R2.

Vulnerability Trend

References