Juniper ScreenOS before 6.3.0r21, when ssh-pka is configured and enabled, allows remote attackers to cause a denial of service (system crash) or execute arbitrary code via crafted SSH negotiation.
The encryption implementation in Juniper ScreenOS 6.2.0r15 through 6.2.0r18, 6.3.0r12 before 6.3.0r12b, 6.3.0r13 before 6.3.0r13b, 6.3.0r14 before 6.3.0r14b, 6.3.0r15 before 6.3.0r15b, 6.3.0r16 before 6.3.0r16b, 6.3.0r17 before 6.3.0r17b, 6.3.0r18 before 6.3.0r18b, 6.3.0r19 before 6.3.0r19b, and 6.3.0r20 before 6.3.0r21 makes it easier for remote attackers to discover the plaintext content of VPN sessions by sniffing the network for ciphertext data and conducting an unspecified decryption attack.
Juniper ScreenOS 6.2.0r15 through 6.2.0r18, 6.3.0r12 before 6.3.0r12b, 6.3.0r13 before 6.3.0r13b, 6.3.0r14 before 6.3.0r14b, 6.3.0r15 before 6.3.0r15b, 6.3.0r16 before 6.3.0r16b, 6.3.0r17 before 6.3.0r17b, 6.3.0r18 before 6.3.0r18b, 6.3.0r19 before 6.3.0r19b, and 6.3.0r20 before 6.3.0r21 allows remote attackers to obtain administrative access by entering an unspecified password during a (1) SSH or (2) TELNET session.
The SSH server in Juniper Junos OS before 12.1X44-D50, 12.1X46 before 12.1X46-D35, 12.1X47 before 12.1X47-D25, 12.3 before 12.3R10, 12.3X48 before 12.3X48-D10, 13.2 before 13.2R8, 13.2X51 before 13.2X51-D35, 13.3 before 13.3R6, 14.1 before 14.1R5, 14.1X53 before 14.1X53-D25, 14.2 before 14.2R3, 15.1 before 15.1R1, and 15.1X49 before 15.1X49-D20 allows remote attackers to cause a denial of service (CPU consumption) via unspecified SSH traffic.
Juniper Junos OS before 12.1X44-D50, 12.1X46 before 12.1X46-D35, 12.1X47 before 12.1X47-D25, 12.3 before 12.3R9, 12.3X48 before 12.3X48-D15, 13.2 before 13.2R7, 13.2X51 before 13.2X51-D35, 13.3 before 13.3R6, 14.1 before 14.1R5, 14.1X50 before 14.1X50-D105, 14.1X51 before 14.1X51-D70, 14.1X53 before 14.1X53-D25, 14.1X55 before 14.1X55-D20, 14.2 before 14.2R1, 15.1 before 15.1F2 or 15.1R1, and 15.1X49 before 15.1X49-D10 does not require a password for the root user when pam.conf is "corrupted," which allows local users to gain root privileges by modifying the file.
The L2TP packet processing functionality in Juniper Netscreen and ScreenOS Firewall products with ScreenOS before 6.3.0r13-dnd1, 6.3.0r14 through 6.3.0r18 before 6.3.0r18-dnc1, and 6.3.0r19 allows remote attackers to cause a denial of service via a crafted L2TP packet.
The PFE daemon in Juniper vSRX virtual firewalls with Junos OS before 15.1X49-D20 allows remote attackers to cause a denial of service via an unspecified connection request to the "host-OS."
Juniper chassis with Trio (Trinity) chipset line cards and Junos OS 13.3 before 13.3R8, 14.1 before 14.1R6, 14.2 before 14.2R5, and 15.1 before 15.1R2 allow remote attackers to cause a denial of service (MPC line card crash) via a crafted uBFD packet.
J-Web in Juniper vSRX virtual firewalls with Junos OS before 15.1X49-D20 allows remote attackers to cause a denial of service (system reboot) via unspecified vectors.
Juniper Junos OS before 11.4R12-S4, 12.1X44 before 12.1X44-D41, 12.1X46 before 12.1X46-D26, 12.1X47 before 12.1X47-D11/D15, 12.2 before 12.2R9, 12.2X50 before 12.2X50-D70, 12.3 before 12.3R8, 12.3X48 before 12.3X48-D10, 12.3X50 before 12.3X50-D42, 13.1 before 13.1R4-S3, 13.1X49 before 13.1X49-D42, 13.1X50 before 13.1X50-D30, 13.2 before 13.2R6, 13.2X51 before 13.2X51-D26, 13.2X52 before 13.2X52-D15, 13.3 before 13.3R3-S3, 14.1 before 14.1R3, 14.2 before 14.2R1, 15.1 before 15.1R1, and 15.1X49 before 15.1X49-D10, when configured for IPv6, allow remote attackers to cause a denial of service (mbuf chain corruption and kernel panic) via crafted IPv6 packets.