This security advisory describes one medium risk vulnerability.
Exploit availability: NoDescription
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input when processing DHCP packets from adjacent clients on EX Series and QFX Series switches. An attacker on the local network can send specially crafted HDCP packets to the affected system and exhaust DMA memory or crash the fxpc process.Mitigation
Install updates from vendor's website.
This issue affects Juniper Networks Junos OS on EX Series and QFX Series:
Junos OS versions prior to 17.4R3 are unaffected by this vulnerability.Vulnerable software versions
Juniper Junos OS: before 17.4R3-S3, 18.1R3-S11, 18.2R3-S6, 18.3R3-S4, 18.4R2-S5, 18.4R2-S7, 18.4R3-S6, 19.1R1-S6, 19.1R3-S3, 19.2R3-S1, 19.3R2-S5, 19.3R3, 19.4R2-S2, 19.4R3, 20.1R2, 20.2R1-S2, 20.2R2, 20.3R1CPE
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.