An Improper Input Validation vulnerability in the 802.1X Authentication (dot1x) Daemon of Juniper Networks Junos OS allows a local, low-privileged attacker with access to the CLI to cause a Denial of Service (DoS).
On running a specific operational dot1x command, the dot1x daemon crashes. An attacker can cause a sustained DoS condition by running this command repeatedly.
When the crash occurs, the authentication status of any 802.1x clients is cleared, and any authorized dot1x port becomes unauthorized. The client cannot re-authenticate until the dot1x daemon restarts.
This issue affects Junos OS:
* All versions before 20.4R3-S10;
* 21.2 versions before 21.2R3-S7;
* 21.4 versions before 21.4R3-S6;
* 22.1 versions before 22.1R3-S5;
* 22.2 versions before 22.2R3-S3;
* 22.3 versions before 22.3R3-S2;
* 22.4 versions before 22.4R3-S1;
* 23.2 versions before 23.2R2.
CVSS Score
5.5
EPSS Score
0.001
Published
2024-07-10
An Improper Check or Handling of Exceptional Conditions vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS).
An attacker can send specific traffic to the device, which causes the rpd to crash and restart. Continued receipt of this traffic will result in a sustained DoS condition.
This issue only affects devices with an EVPN-VPWS instance with IGMP-snooping enabled.
This issue affects Junos OS:
* All versions before 20.4R3-S10,
* from 21.4 before 21.4R3-S6,
* from 22.1 before 22.1R3-S5,
* from 22.2 before 22.2R3-S3,
* from 22.3 before 22.3R3-S2,
* from 22.4 before 22.4R3,
* from 23.2 before 23.2R2;
Junos OS Evolved:
* All versions before 20.4R3-S10-EVO,
* from 21.4-EVO before 21.4R3-S6-EVO,
* from 22.1-EVO before 22.1R3-S5-EVO,
* from 22.2-EVO before 22.2R3-S3-EVO,
* from 22.3-EVO before 22.3R3-S2-EVO,
* from 22.4-EVO before 22.4R3-EVO,
* from 23.2-EVO before 23.2R2-EVO.
CVSS Score
6.5
EPSS Score
0.001
Published
2024-07-10
A Use After Free vulnerability in command processing of Juniper Networks Junos OS on MX Series allows a local, authenticated attacker to cause the broadband edge service manager daemon (bbe-smgd) to crash upon execution of specific CLI commands, creating a Denial of Service (DoS) condition. The process crashes and restarts automatically.
When specific CLI commands are executed, the bbe-smgd daemon attempts to write into an area of memory (mgd socket) that was already closed, causing the process to crash. This process manages and controls the configuration of broadband subscriber sessions and services. While the process is unavailable, additional subscribers will not be able to connect to the device, causing a temporary Denial of Service condition.
This issue only occurs if Graceful Routing Engine Switchover (GRES) and Subscriber Management are enabled.
This issue affects Junos OS:
* All versions before 20.4R3-S5,
* from 21.1 before 21.1R3-S4,
* from 21.2 before 21.2R3-S3,
* from 21.3 before 21.3R3-S5,
* from 21.4 before 21.4R3-S5,
* from 22.1 before 22.1R3,
* from 22.2 before 22.2R3,
* from 22.3 before 22.3R2;
CVSS Score
5.5
EPSS Score
0.001
Published
2024-04-16
An Improper Handling of Exceptional Conditions vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated attacker to cause a Denial of Service (DoS), which causes the l2cpd process to crash by sending a specific TLV.
The l2cpd process is responsible for layer 2 control protocols, such as STP, RSTP, MSTP, VSTP, ERP, and LLDP. The impact of the l2cpd crash is reinitialization of STP protocols (RSTP, MSTP or VSTP), and MVRP and ERP, leading to a Denial of Service. Continued receipt and processing of this specific TLV will create a sustained Denial of Service (DoS) condition.
This issue affects:
Junos OS:
all versions before 20.4R3-S9,
from 21.2 before 21.2R3-S7,
from 21.3 before 21.3R3-S5,
from 21.4 before 21.4R3-S4,
from 22.1 before 22.1R3-S4,
from 22.2 before 22.2R3-S2,
from 22.3 before 22.3R2-S2, 22.3R3-S1,
from 22.4 before 22.4R2-S2, 22.4R3,
from 23.2 before 23.2R1-S1, 23.2R2;
Junos OS Evolved:
all versions before 21.2R3-S7,
from 21.3 before 21.3R3-S5-EVO,
from 21.4 before 21.4R3-S5-EVO,
from 22.1 before 22.1R3-S4-EVO,
from 22.2 before 22.2R3-S2-EVO,
from 22.3 before 22.3R2-S2-EVO, 22.3R3-S1-EVO,
from 22.4 before 22.4R2-S2-EVO, 22.4R3-EVO,
from 23.2 before 23.2R1-S1-EVO, 23.2R2-EVO.
CVSS Score
6.5
EPSS Score
0.001
Published
2024-04-16
An Improper Check for Unusual or Exceptional Conditions vulnerability in the the Public Key Infrastructure daemon (pkid) of Juniper Networks Junos OS allows an unauthenticated networked attacker to cause Denial of Service (DoS).
The pkid is responsible for the certificate verification. Upon a failed verification, the pkid uses all CPU resources and becomes unresponsive to future verification attempts. This means that all subsequent VPN negotiations depending on certificate verification will fail.
This CPU utilization of pkid can be checked using this command:
root@srx> show system processes extensive | match pkid
xxxxx root 103 0 846M 136M CPU1 1 569:00 100.00% pkid
This issue affects:
Juniper Networks Junos OS
* All versions prior to 20.4R3-S10;
* 21.2 versions prior to 21.2R3-S7;
* 21.4 versions prior to 21.4R3-S5;
* 22.1 versions prior to 22.1R3-S4;
* 22.2 versions prior to 22.2R3-S3;
* 22.3 versions prior to 22.3R3-S1;
* 22.4 versions prior to 22.4R3;
* 23.2 versions prior to 23.2R1-S2, 23.2R2.
CVSS Score
7.5
EPSS Score
0.003
Published
2024-04-12
An Improper Check for Unusual or Exceptional Conditions vulnerability in the Layer 2 Address Learning Daemon (l2ald) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS).
When telemetry requests are sent to the device, and the Dynamic Rendering Daemon (drend) is suspended, the l2ald crashes and restarts due to factors outside the attackers control. Repeated occurrences of these events causes a sustained DoS condition.
This issue affects:
Junos OS:
* All versions earlier than 20.4R3-S10;
* 21.2 versions earlier than 21.2R3-S7;
* 21.4 versions earlier than 21.4R3-S5;
* 22.1 versions earlier than 22.1R3-S4;
* 22.2 versions earlier than 22.2R3-S3;
* 22.3 versions earlier than 22.3R3-S1;
* 22.4 versions earlier than 22.4R3;
* 23.2 versions earlier than 23.2R1-S2, 23.2R2.
Junos OS Evolved:
* All versions earlier than 21.4R3-S5-EVO;
* 22.1-EVO versions earlier than 22.1R3-S4-EVO;
* 22.2-EVO versions earlier than 22.2R3-S3-EVO;
* 22.3-EVO versions earlier than 22.3R3-S1-EVO;
* 22.4-EVO versions earlier than 22.4R3-EVO;
* 23.2-EVO versions earlier than 23.2R2-EVO.
CVSS Score
5.9
EPSS Score
0.002
Published
2024-04-12
A Missing Authentication for Critical Function vulnerability in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS on MX Series with SPC3, and SRX Series allows an unauthenticated network-based attacker to cause limited impact to the integrity or availability of the device.
If a device is configured with IPsec authentication algorithm hmac-sha-384 or hmac-sha-512, tunnels are established normally but for traffic traversing the tunnel no authentication information is sent with the encrypted data on egress, and no authentication information is expected on ingress. So if the peer is an unaffected device transit traffic is going to fail in both directions. If the peer is an also affected device transit traffic works, but without authentication, and configuration and CLI operational commands indicate authentication is performed.
This issue affects Junos OS:
* All versions before 20.4R3-S7,
* 21.1 versions before 21.1R3,
* 21.2 versions before 21.2R2-S1, 21.2R3,
* 21.3 versions before 21.3R1-S2, 21.3R2.
CVSS Score
4.8
EPSS Score
0.001
Published
2024-04-12
An Improper Handling of Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a network-based, unauthenticated attacker to send a specific routing update, causing an rpd core due to memory corruption, leading to a Denial of Service (DoS).
This issue can only be triggered when the system is configured for CoS-based forwarding (CBF) with a policy map containing a cos-next-hop-map action (see below).
This issue affects:
Junos OS:
* all versions before 20.4R3-S10,
* from 21.2 before 21.2R3-S8,
* from 21.3 before 21.3R3,
* from 21.4 before 21.4R3,
* from 22.1 before 22.1R2;
Junos OS Evolved:
* all versions before 21.2R3-S8-EVO,
* from 21.3 before 21.3R3-EVO,
* from 21.4 before 21.4R3-EVO,
* from 22.1 before 22.1R2-EVO.
CVSS Score
7.5
EPSS Score
0.005
Published
2024-04-12
An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on EX4300 Series allows a locally authenticated attacker with low privileges to cause a Denial-of-Service (Dos).
If a specific CLI command is issued, a PFE crash will occur. This will cause traffic forwarding to be interrupted until the system self-recovers.
This issue affects Junos OS:
All versions before 20.4R3-S10,
21.2 versions before 21.2R3-S7,
21.4 versions before 21.4R3-S6.
CVSS Score
5.5
EPSS Score
0.0
Published
2024-04-12
A Use-After-Free vulnerability in the Layer 2 Address Learning Daemon (l2ald)
of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause l2ald to crash leading to a Denial-of-Service (DoS).
In an EVPN-VXLAN scenario, when
state updates are received and processed by the affected system, the correct order of some processing steps is not ensured, which can lead to an l2ald crash and restart. Whether the crash occurs depends on system internal timing which is outside the attackers control.
This issue affects:
Junos OS:
* All versions before 20.4R3-S8,
* 21.2 versions before 21.2R3-S6,
* 21.3 versions before 21.3R3-S5,
* 21.4 versions before 21.4R3-S4,
* 22.1 versions before 22.1R3-S3,
* 22.2 versions before 22.2R3-S1,
* 22.3 versions before 22.3R3,,
* 22.4 versions before 22.4R2;
Junos OS Evolved:
* All versions before 20.4R3-S8-EVO,
* 21.2-EVO versions before 21.2R3-S6-EVO,
* 21.3-EVO
versions before 21.3R3-S5-EVO,
* 21.4-EVO
versions before 21.4R3-S4-EVO,
* 22.1-EVO
versions before 22.1R3-S3-EVO,
* 22.2-EVO
versions before 22.2R3-S1-EVO,
* 22.3-EVO
versions before 22.3R3-EVO,
* 22.4-EVO
versions before 22.4R2-EVO.
CVSS Score
5.3
EPSS Score
0.001
Published
2024-04-12