CVE-2018-0051

A Denial of Service vulnerability in the SIP application layer gateway (ALG) component of Junos OS based platforms allows an attacker to crash MS-PIC, MS-MIC, MS-MPC, MS-DPC or SRX flow daemon (flowd) process. This issue affects Junos OS devices with NAT or stateful firewall configuration in combination with the SIP ALG enabled. SIP ALG is enabled by default on SRX Series devices except for SRX-HE devices. SRX-HE devices have SIP ALG disabled by default. The status of ALGs in SRX device can be obtained by executing the command: show security alg status Affected releases are Juniper Networks Junos OS: 12.1X46 versions prior to 12.1X46-D77; 12.3X48 versions prior to 12.3X48-D70; 15.1X49 versions prior to 15.1X49-D140; 15.1 versions prior to 15.1R4-S9, 15.1R7-S1; 15.1F6; 16.1 versions prior to 16.1R4-S9, 16.1R6-S1, 16.1R7; 16.2 versions prior to 16.2R2-S7, 16.2R3; 17.1 versions prior to 17.1R2-S7, 17.1R3; 17.2 versions prior to 17.2R1-S6, 17.2R2-S4, 17.2R3; 17.3 versions prior to 17.3R1-S5, 17.3R2-S2, 17.3R3; 17.4 versions prior to 17.4R2. No other Juniper Networks products or platforms are affected by this issue.

• CWE-20

• http://www.securitytracker.com/id/1041852Third Party Advisory, VDB Entry
• https://kb.juniper.net/JSA10885Vendor Advisory
• http://www.securitytracker.com/id/1041852Third Party Advisory, VDB Entry
• https://kb.juniper.net/JSA10885Vendor Advisory

Published

Oct 10, 2018

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2018-0045Receipt of a specific Draft-Rosen MVPN control packet may ca…8.8
• CVE-2018-0046A reflected cross-site scripting vulnerability in OpenNMS in…8.8
• CVE-2018-0047A persistent cross-site scripting vulnerability in the UI fr…8
• CVE-2018-0048A vulnerability in the Routing Protocols Daemon (RPD) with J…7.5
• CVE-2018-0049A NULL Pointer Dereference vulnerability in Juniper Networks…7.5
• CVE-2018-0050An error handling vulnerability in Routing Protocols Daemon …7.5
• CVE-2018-0052If RSH service is enabled on Junos OS and if the PAM authent…7.2
• CVE-2018-0053An authentication bypass vulnerability in the initial boot s…6.8
• CVE-2018-0054On QFX5000 Series and EX4600 switches, a high rate of Ethern…6.5
• CVE-2018-0055Receipt of a specially crafted DHCPv6 message destined to a …6.5
• CVE-2018-0056If a duplicate MAC address is learned by two different inter…6.5
• CVE-2018-0057On MX Series and M120/M320 platforms configured in a Broadba…6.1