CVE-2021-0249

CVE-2021-0249 is a buffer overflow in Juniper Networks Junos OS Packet Forwarding Engine (PFE) on SRX Series devices. Affected releases include SRX Series: 15.1X49 prior to 15.1X49-D190; 17.4 prior to 17.4R2-S9; 17.4R3 and later prior to 18.1R3-S9; 18.2 prior to 18.2R3-S1; 18.3 prior to 18.3R2-S3...

CVE-2021-0248

CVE-2021-0248 affects Juniper Networks Junos OS on NFX Series devices where a hard-coded credential flaw allows an attacker to take over any instance of an NFX deployment . The vulnerability is exploitable only via administrative interfaces . Affected scope is Junos OS versions prior to 19.1R1 on...

CVE-2021-0248 NFX Series: Hard-coded credentials allow an attacker to take control of any instance through administrative interfaces.

This issue is not applicable to NFX NextGen Software. On NFX Series devices the use of Hard-coded Credentials in Juniper Networks Junos OS allows an attacker to take over any instance of an NFX deployment. This issue is only exploitable through administrative interfaces. This issue affects: Junip...

CVE-2021-0247 Junos OS: PTX Series, QFX Series: Due to a race condition input loopback firewall filters applied to interfaces may not operate even when listed in the running configuration.

A Race Condition Concurrent Execution using Shared Resource with Improper Synchronization vulnerability in the firewall process dfwd of Juniper Networks Junos OS allows an attacker to bypass the firewall rule sets applied to the input loopback filter on any interfaces of a device. This issue is...

CVE-2021-0246

CVE-2021-0246 affects Juniper Networks Junos OS on SRX1500/SRX4100/SRX4200/SRX4600/SRX5000 Series with SPC2/SPC3 in multi-tenant deployments. The root cause is incorrect default permissions assigned to tenant system administrators, which may allow a tenant to send their traffic to other tenants w...

CVE-2021-0246 Junos OS: SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3: In a multi-tenant environment, a tenant host administrator may be able to jailbreak out of their network impacting other tenant networks or gather information from other networks.

On SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3, devices using tenant services on Juniper Networks Junos OS, due to incorrect default permissions assigned to tenant system administrators a tenant system administrator may inadvertently send their network traffic to one or more...

CVE-2021-0247

CVE-2021-0247 describes a race condition in Juniper Networks Junos OS dfwd (firewall process) that can allow bypass of firewall rules on the input loopback filter across multiple Junos releases (QFX/PTX series; multiple versions across 14.x–19.x). The underlying issue is concurrent execution with...

CVE-2021-0245

CVE-2021-0245 affects Juniper Networks Junos OS on Junos Fusion satellite devices, with a root cause of hard-coded credentials that allow a locally authenticated attacker to elevate privileges and take control. Affected ranges include multiple Junos OS revisions for Junos Fusion Satellite Devices...

CVE-2021-0245 Junos OS: Junos Fusion: Hard-coded credentials on satellite devices allows a locally authenticated attacker to elevate their privileges.

A Use of Hard-coded Credentials vulnerability in Juniper Networks Junos OS on Junos Fusion satellite devices allows an attacker who is local to the device to elevate their privileges and take control of the device. This issue affects: Juniper Networks Junos OS Junos Fusion Satellite Devices. 16.1...

CVE-2021-0244

CVE-2021-0244 describes a signal handler race condition in the Layer 2 Address Learning Daemon (L2ALD) of Juniper Networks Junos OS that may allow an attacker to bypass storm-control on devices. Affected software ranges across multiple Junos OS branches and versions, including EX Series, SRX Seri...

CVE-2021-0243

CVE-2021-0243 affects Juniper Networks Junos OS on the EX4300, where the firewall policer’s discard action can fail on a Layer 2 port, allowing traffic to pass and be forwarded even when policer limits are exceeded. This impacts IPv4 policing (not IPv6 or firewall policing actions) and can manife...

CVE-2021-0243 Junos OS: EX4300: Stateless firewall policer fails to discard traffic

Improper Handling of Unexpected Data in the firewall policer of Juniper Networks Junos OS on EX4300 switches allows matching traffic to exceed set policer limits, possibly leading to a limited Denial of Service DoS condition. When the firewall policer discard action fails on a Layer 2 port, it wi...

CVE-2021-0244 Junos OS: A race condition in the storm control profile may allow an attacker to cause a Denial of Service condition

A signal handler race condition exists in the Layer 2 Address Learning Daemon L2ALD of Juniper Networks Junos OS due to the absence of a specific protection mechanism to avoid a race condition which may allow an attacker to bypass the storm-control feature on devices. This issue is a corner case...

CVE-2021-0242 Junos OS: EX4300: FPC crash upon receipt of specific frames on an interface without L2PT or dot1x configured

A vulnerability due to the improper handling of direct memory access DMA buffers on EX4300 switches on Juniper Networks Junos OS allows an attacker sending specific unicast frames to trigger a Denial of Service DoS condition by exhausting DMA buffers, causing the FPC to crash and the device to...

CVE-2021-0242

CVE-2021-0242 describes a DoS vulnerability in Juniper Junos OS on EX4300 switches where processing of DMA buffers can be exhausted by specific valid unicast frames received on an interface without L2PT or dot1x. Affected FPCs may crash and reboot as DMA buffers continually increase, with log ind...

CVE-2021-0240

CVE-2021-0240 affects Juniper Networks Junos OS when configured as DHCPv6 local server or DHCPv6 Relay Agent. A malformed DHCPv6 packet can crash the JDHCPD daemon, causing it to restart; continued receipt of such packets can sustain a DoS on affected devices. Affected Junos OS versions include 1...

CVE-2021-0241

CVE-2021-0241 affects Junos OS DHCPv6 local-server/Relay Agent, where the JDHCPD daemon may crash with a core dump upon receiving a specific DHCPv6 packet, causing the daemon to restart and sustain a DoS condition. Affected Junos OS releases include 17.3 (before 17.3R3‑S11), 17.4 (before 17.4R3‑S...

CVE-2021-0241 Junos OS: Receipt of specific DHCPv6 packet may cause jdhcpd to crash and restart

On Juniper Networks Junos OS platforms configured as DHCPv6 local server or DHCPv6 Relay Agent, Juniper Networks Dynamic Host Configuration Protocol Daemon JDHCPD process might crash with a core dump if a specific DHCPv6 packet is received, resulting in a restart of the daemon. The daemon...

CVE-2021-0240 Junos OS: Receipt of malformed DHCPv6 packets causes jdhcpd to crash and restart.

On Juniper Networks Junos OS platforms configured as DHCPv6 local server or DHCPv6 Relay Agent, the Juniper Networks Dynamic Host Configuration Protocol Daemon JDHCPD process might crash if a malformed DHCPv6 packet is received, resulting in a restart of the daemon. The daemon automatically...

CVE-2021-0239

In Juniper Networks Junos OS Evolved, a vulnerability (CVE-2021-0239) exists where a continuous stream of specific genuine Layer 2 frames can cause the AFT manager process (Evo-aftmand) to crash and restart the packet forwarding engine (PFE), resulting in a Denial of Service. Affected: Junos OS E...