This security advisory describes one medium risk vulnerability.
Exploit availability: NoDescription
The vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak in packet forwarding engine due to 802.1X authenticator port interface flaps. A remote attacker can force the application to leak memory and perform denial of service attack.Mitigation
Install updates from vendor's website.
This issue affects Juniper Networks Junos OS:
14.1X53 versions prior to 14.1X53-D54;
15.1X49 versions prior to 15.1X49-D240 ;
15.1X53 versions prior to 15.1X53-D593;
16.1 versions prior to 16.1R7-S8;
17.2 versions prior to 17.2R3-S4;
17.3 versions prior to 17.3R3-S8;
17.4 versions prior to 17.4R2-S11, 17.4R3-S2;
18.1 versions prior to 18.1R3-S10 ;
18.2 versions prior to 18.2R2-S7, 18.2R3-S3;
18.3 versions prior to 18.3R2-S4, 18.3R3-S2;
18.4 versions prior to 18.4R1-S7, 18.4R2-S4, 18.4R3-S2;
19.1 versions prior to 19.1R1-S5, 19.1R2-S2, 19.1R3;
19.2 versions prior to 19.2R1-S5, 19.2R2;
19.3 versions prior to 19.3R2-S3, 19.3R3;
19.4 versions prior to 19.4R1-S2, 19.4R2.This issue does not affect Juniper Networks Junos OS 12.3, 15.1. Vulnerable software versions
Juniper Junos OS: before 14.1X53-D54, 15.1X49-D240, 15.1X53-D593, 16.1R7-S8, 17.2R3-S4, 17.3R3-S8, 17.4R2-S11, 17.4R3-S2, 18.1R3-S10, 18.2R2-S7, 18.2R3-S3, 18.3R2-S4, 18.3R3-S2, 18.4R1-S7, 18.4R2-S4, 18.4R3-S2, 19.1R1-S5, 19.1R2-S2, 19.1R3, 19.2R1-S5, 19.2R2, 19.3R2-S3, 19.3R3, 19.4R1-S2, 19.4R2, 20.1R1CPE
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.