A Denial of Service (DoS) vulnerability in BGP in Juniper Networks Junos OS configured as a VPLS PE allows an attacker to craft a specific BGP message to cause the routing protocol daemon (rpd) process to crash and restart. While rpd restarts after a crash, repeated crashes can result in an extended DoS condition. This issue only affects PE routers configured with BGP Auto discovery for LDP VPLS. Other BGP configurations are unaffected by this vulnerability. Affected releases are Juniper Networks Junos OS: 12.1X46 versions prior to 12.1X46-D81; 12.3 versions prior to 12.3R12-S12; 12.3X48 versions prior to 12.3X48-D76; 14.1X53 versions prior to 14.1X53-D48; 15.1 versions prior to 15.1F6-S12, 15.1R7-S2; 15.1X49 versions prior to 15.1X49-D150; 15.1X53 versions prior to 15.1X53-D235, 15.1X53-D495, 15.1X53-D590, 15.1X53-D68; 16.1 versions prior to 16.1R3-S10, 16.1R4-S12, 16.1R6-S6, 16.1R7-S1; 16.2 versions prior to 16.2R2-S7; 17.1 versions prior to 17.1R2-S9, 17.1R3; 17.2 versions prior to 17.2R1-S7, 17.2R2-S6, 17.2R3; 17.3 versions prior to 17.3R2-S4, 17.3R3; 17.4 versions prior to 17.4R1-S5, 17.4R2; 18.1 versions prior to 18.1R2-S3, 18.1R3.

Receipt of a specially crafted DHCPv6 message destined to a Junos OS device configured as a DHCP server in a Broadband Edge (BBE) environment may result in a jdhcpd daemon crash. The daemon automatically restarts without intervention, but a continuous receipt of crafted DHCPv6 packets could leaded to an extended denial of service condition. This issue only affects Junos OS 15.1 and later. Earlier releases are unaffected by this issue. Devices are only vulnerable to the specially crafted DHCPv6 message if DHCP services are configured. Devices not configured to act as a DHCP server are not vulnerable to this issue. Affected releases are Juniper Networks Junos OS: 15.1 versions prior to 15.1R7-S2; 15.1X49 versions prior to 15.1X49-D160; 15.1X53 versions prior to 15.1X53-D235, 15.1X53-D495; 16.1 versions prior to 16.1R4-S11, 16.1R6-S6, 16.1R7-S2; 16.2 versions prior to 16.2R2-S7; 17.1 versions prior to 17.1R2-S9; 17.2 versions prior to 17.2R2-S6; 17.3 versions prior to 17.3R3-S1; 17.4 versions prior to 17.4R1-S5; 18.1 versions prior to 18.1R2-S3; 18.2 versions prior to 18.2R1-S2; 18.2X75 versions prior to 18.2X75-D20.

A NULL Pointer Dereference vulnerability in Juniper Networks Junos OS allows an attacker to cause the Junos OS kernel to crash. Continued receipt of this specifically crafted malicious MPLS packet will cause a sustained Denial of Service condition. This issue require it to be received on an interface configured to receive this type of traffic. Affected releases are Juniper Networks Junos OS: 12.1X46 versions above and including 12.1X46-D76 prior to 12.1X46-D81 on SRX100, SRX110, SRX210, SRX220, SRX240m, SRX550m SRX650, SRX300, SRX320, SRX340, SRX345, SRX1500, SRX4100, SRX4200, SRX4600 and vSRX; 12.3R12-S10; 12.3X48 versions above and including 12.3X48-D66 prior to 12.3X48-D75 on SRX100, SRX110, SRX210, SRX220, SRX240m, SRX550m SRX650, SRX300, SRX320, SRX340, SRX345, SRX1500, SRX4100, SRX4200, SRX4600 and vSRX; 14.1X53-D47 on EX2200/VC, EX3200, EX3300/VC, EX4200, EX4300, EX4550/VC, EX4600, EX6200, EX8200/VC (XRE), QFX3500, QFX3600, QFX5100; 14.1X53 versions above and including 14.1X53-D115 prior to 14.1X53-D130 on QFabric System; 15.1 versions above and including 15.1F6-S10; 15.1R4-S9; 15.1R6-S6; 15.1 versions above and including 15.1R7 prior to 15.1R7-S2; 15.1X49 versions above and including 15.1X49-D131 prior to 15.1X49-D150 on SRX100, SRX110, SRX210, SRX220, SRX240m, SRX550m SRX650, SRX300, SRX320, SRX340, SRX345, SRX1500, SRX4100, SRX4200, SRX4600 and vSRX; 15.1X53 versions above 15.1X53-D233 prior to 15.1X53-D235 on QFX5200/QFX5110; 15.1X53 versions up to and including 15.1X53-D471 prior to 15.1X53-D590 on NFX150, NFX250; 15.1X53-D67 on QFX10000 Series; 15.1X53-D59 on EX2300/EX3400; 16.1 versions above and including 16.1R3-S8; 16.1 versions above and including 16.1R4-S9 prior to 16.1R4-S12; 16.1 versions above and including 16.1R5-S4; 16.1 versions above and including 16.1R6-S3 prior to 16.1R6-S6; 16.1 versions above and including 16.1R7 prior to 16.1R7-S2; 16.2 versions above and including 16.2R1-S6; 16.2 versions above and including 16.2R2-S5 prior to 16.2R2-S7; 17.1R1-S7; 17.1 versions above and including 17.1R2-S7 prior to 17.1R2-S9; 17.2R1-S6; 17.2 versions above and including 17.2R2-S4 prior to 17.2R2-S6; 17.2X75 versions above and including 17.2X75-D100 prior to X17.2X75-D101, 17.2X75-D110; 17.3 versions above and including 17.3R1-S4 on All non-SRX Series and SRX100, SRX110, SRX210, SRX220, SRX240m, SRX550m SRX650, SRX300, SRX320, SRX340, SRX345, SRX1500, SRX4100, SRX4200, SRX4600 and vSRX; 17.3 versions above and including 17.3R2-S2 prior to 17.3R2-S4 on All non-SRX Series and SRX100, SRX110, SRX210, SRX220, SRX240m, SRX550m SRX650, SRX300, SRX320, SRX340, SRX345, SRX1500, SRX4100, SRX4200, SRX4600 and vSRX; 17.3R3 on All non-SRX Series and SRX100, SRX110, SRX210, SRX220, SRX240m, SRX550m SRX650, SRX300, SRX320, SRX340, SRX345, SRX1500, SRX4100, SRX4200, SRX4600 and vSRX; 17.4 versions above and including 17.4R1-S3 prior to 17.4R1-S5 on All non-SRX Series and SRX100, SRX110, SRX210, SRX220, SRX240m, SRX550m SRX650, SRX300, SRX320, SRX340, SRX345, SRX1500, SRX4100, SRX4200, SRX4600 and vSRX; 17.4R2 on All non-SRX Series and SRX100, SRX110, SRX210, SRX220, SRX240m, SRX550m SRX650, SRX300, SRX320, SRX340, SRX345, SRX1500, SRX4100, SRX4200, SRX4600 and vSRX; 18.1 versions above and including 18.1R2 prior to 18.1R2-S3, 18.1R3 on All non-SRX Series and SRX100, SRX110, SRX210, SRX220, SRX240m, SRX550m SRX650, SRX300, SRX320, SRX340, SRX345, SRX1500, SRX4100, SRX4200, SRX4600 and vSRX; 18.2 versions above and including 18.2R1 prior to 18.2R1-S2, 18.2R1-S3, 18.2R2 on All non-SRX Series and SRX100, SRX110, SRX210, SRX220, SRX240m, SRX550m SRX650, SRX300, SRX320, SRX340, SRX345, SRX1500, SRX4100, SRX4200, SRX4600 and vSRX; 18.2X75 versions above and including 18.2X75-D5 prior to 18.2X75-D20.

An issue was discovered in Embedthis GoAhead before 4.0.1 and Appweb before 7.0.2. An HTTP POST request with a specially crafted "Host" header field may cause a NULL pointer dereference and thus cause a denial of service, as demonstrated by the lack of a trailing ']' character in an IPv6 address.

An issue was discovered in Embedthis GoAhead before 4.0.1 and Appweb before 7.0.2. The server mishandles some HTTP request fields associated with time, which results in a NULL pointer dereference, as demonstrated by If-Modified-Since or If-Unmodified-Since with a month greater than 11.

A Junos device with VPLS routing-instances configured on one or more interfaces may be susceptible to an mbuf leak when processing a specific MPLS packet. Approximately 1 mbuf is leaked per each packet processed. The number of mbufs is platform dependent. The following command provides the number of mbufs that are currently in use and maximum number of mbufs that can be allocated on a platform: > show system buffers 2437/3143/5580 mbufs in use (current/cache/total) Once the device runs out of mbufs it will become inaccessible and a restart will be required. This issue only affects end devices, transit devices are not affected. Affected releases are Juniper Networks Junos OS with VPLS configured running: 12.1X46 versions prior to 12.1X46-D76; 12.3X48 versions prior to 12.3X48-D66, 12.3X48-D70; 14.1 versions prior to 14.1R9; 14.1X53 versions prior to 14.1X53-D47; 14.2 versions prior to 14.2R8; 15.1 versions prior to 15.1F2-S19, 15.1F6-S10, 15.1R4-S9, 15.1R5-S7, 15.1R6-S4, 15.1R7; 15.1X49 versions prior to 15.1X49-D131, 15.1X49-D140; 15.1X53 versions prior to 15.1X53-D58 on EX2300/EX3400; 15.1X53 versions prior to 15.1X53-D233 on QFX5200/QFX5110; 15.1X53 versions prior to 15.1X53-D471 on NFX; 15.1X53 versions prior to 15.1X53-D66 on QFX10; 16.1 versions prior to 16.1R3-S8, 16.1R4-S6, 16.1R5; 16.2 versions prior to 16.2R1-S6, 16.2R2-S5, 16.2R3; 17.1 versions prior to 17.1R1-S7, 17.1R2-S6, 17.1R3; 17.2 versions prior to 17.2R1-S5, 17.2R2.

Junos OS may be impacted by the receipt of a malformed BGP UPDATE which can lead to a routing process daemon (rpd) crash and restart. Receipt of a repeated malformed BGP UPDATEs can result in an extended denial of service condition for the device. This malformed BGP UPDATE does not propagate to other BGP peers. Affected releases are Juniper Networks Junos OS: 14.1X53 versions prior to 14.1X53-D47; 15.1 versions prior to 15.1F6-S10, 15.1R4-S9, 15.1R6-S6, 15.1R7; 15.1X49 versions prior to 15.1X49-D130 on SRX; 15.1X53 versions prior to 15.1X53-D66 on QFX10K; 15.1X53 versions prior to 15.1X53-D58 on EX2300/EX3400; 15.1X53 versions prior to 15.1X53-D233 on QFX5200/QFX5110; 15.1X53 versions prior to 15.1X53-D471 on NFX; 16.1 versions prior to 16.1R3-S8, 16.1R4-S9, 16.1R5-S3, 16.1R6-S3, 16.1R7; 16.1X65 versions prior to 16.1X65-D47; 16.2 versions prior to 16.2R1-S6, 16.2R2-S5, 16.2R3; 17.1 versions prior to 17.1R2-S3, 17.1R3; 17.2 versions prior to 17.2R1-S3, 17.2R2-S1, 17.2R3; 17.2X75 versions prior to 17.2X75-D70; 13.2 versions above and including 13.2R1. Versions prior to 13.2R1 are not affected. Juniper SIRT is not aware of any malicious exploitation of this vulnerability. No other Juniper Networks products or platforms are affected by this issue.

A vulnerability in Junos OS SNMP MIB-II subagent daemon (mib2d) may allow a remote network based attacker to cause the mib2d process to crash resulting in a denial of service condition (DoS) for the SNMP subsystem. While a mib2d process crash can disrupt the network monitoring via SNMP, it does not impact routing, switching or firewall functionalities. SNMP is disabled by default on devices running Junos OS. Affected releases are Juniper Networks Junos OS: 12.1X46 versions prior to 12.1X46-D76; 12.3 versions prior to 12.3R12-S7, 12.3R13; 12.3X48 versions prior to 12.3X48-D65; 14.1 versions prior to 14.1R9; 14.1X53 versions prior to 14.1X53-D130; 15.1 versions prior to 15.1F2-S20, 15.1F6-S10, 15.1R7; 15.1X49 versions prior to 15.1X49-D130; 15.1X53 versions prior to 15.1X53-D233, 15.1X53-D471, 15.1X53-D472, 15.1X53-D58, 15.1X53-D66; 16.1 versions prior to 16.1R5-S3, 16.1R7; 16.1X65 versions prior to 16.1X65-D47; 16.1X70 versions prior to 16.1X70-D10; 16.2 versions prior to 16.2R1-S6, 16.2R2-S5, 16.2R3; 17.1 versions prior to 17.1R2-S6, 17.1R3;

Embedthis Appweb before 4.6.6 and 5.x before 5.2.1 allows remote attackers to cause a denial of service (NULL pointer dereference) via a Range header with an empty value, as demonstrated by "Range: x=,".