Juniper: Security Vulnerabilities
An Unsupported Feature in the UI vulnerability in Juniper Networks Junos OS on MX Series and EX9200 Series allows an unauthenticated, network-based attacker to cause partial impact to the integrity of the device.
If the "tcp-reset" option is added to the "reject" action in an IPv6 filter which matches on "payload-protocol", packets are permitted instead of rejected. This happens because the payload-protocol match criteria is not supported in the kernel filter causing it to accept all packets without taking any other action. As a fix the payload-protocol match will be treated the same as a "next-header" match to avoid this filter bypass.
This issue doesn't affect IPv4 firewall filters.
This issue affects Juniper Networks Junos OS on MX Series and EX9200 Series:
* All versions earlier than 20.4R3-S7;
* 21.1 versions earlier than 21.1R3-S5;
* 21.2 versions earlier than 21.2R3-S5;
* 21.3 versions earlier than 21.3R3-S4;
* 21.4 versions earlier than 21.4R3-S4;
* 22.1 versions earlier than 22.1R3-S2;
* 22.2 versions earlier than 22.2R3-S2;
* 22.3 versions earlier than 22.3R2-S2, 22.3R3;
* 22.4 versions earlier than 22.4R1-S2, 22.4R2-S2, 22.4R3.
CVSS Score
5.3
EPSS Score
0.0
Published
2024-01-12
A Missing Release of Memory after Effective Lifetime vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).
In a Juniper Flow Monitoring (jflow) scenario route churn that causes BGP next hops to be updated will cause a slow memory leak and eventually a crash and restart of rpd.
Thread level memory utilization for the areas where the leak occurs can be checked using the below command:
user@host> show task memory detail | match so_in
so_in6 28 32 344450 11022400 344760 11032320
so_in 8 16 1841629 29466064 1841734 29467744
This issue affects:
Junos OS
* 21.4 versions earlier than 21.4R3;
* 22.1 versions earlier than 22.1R3;
* 22.2 versions earlier than 22.2R3.
Junos OS Evolved
* 21.4-EVO versions earlier than 21.4R3-EVO;
* 22.1-EVO versions earlier than 22.1R3-EVO;
* 22.2-EVO versions earlier than 22.2R3-EVO.
This issue does not affect:
Juniper Networks Junos OS versions earlier than 21.4R1.
Juniper Networks Junos OS Evolved versions earlier than 21.4R1.
CVSS Score
7.5
EPSS Score
0.002
Published
2024-01-12
An Improper Handling of Syntactically Invalid Structure vulnerability in Object Flooding Protocol (OFP) service of Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).
On all Junos OS Evolved platforms, when specific TCP packets are received on an open OFP port, the OFP crashes leading to a restart of Routine Engine (RE). Continuous receipt of these specific TCP packets will lead to a sustained Denial of Service (DoS) condition.
This issue affects:
Juniper Networks Junos OS Evolved
* All versions earlier than 21.2R3-S7-EVO;
* 21.3 versions earlier than 21.3R3-S5-EVO ;
* 21.4 versions earlier than 21.4R3-S5-EVO;
* 22.1 versions earlier than 22.1R3-S4-EVO;
* 22.2 versions earlier than 22.2R3-S3-EVO ;
* 22.3 versions earlier than 22.3R3-EVO;
* 22.4 versions earlier than 22.4R2-EVO, 22.4R3-EVO.
CVSS Score
7.5
EPSS Score
0.002
Published
2024-01-12
A Missing Release of Memory after Effective Lifetime vulnerability in Routing Protocol Daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause an rpd crash, leading to Denial of Service (DoS).
On all Junos OS and Junos OS Evolved platforms, when traffic engineering is enabled for OSPF or ISIS, and a link flaps, a patroot memory leak is observed. This memory leak, over time, will lead to an rpd crash and restart.
The memory usage can be monitored using the below command.
user@host> show task memory detail | match patroot
This issue affects:
Juniper Networks Junos OS
* All versions earlier than 21.2R3-S3;
* 21.3 versions earlier than 21.3R3-S5;
* 21.4 versions earlier than 21.4R3-S3;
* 22.1 versions earlier than 22.1R3;
* 22.2 versions earlier than 22.2R3.
Juniper Networks Junos OS Evolved
* All versions earlier than 21.3R3-S5-EVO;
* 21.4 versions earlier than 21.4R3-EVO;
* 22.1 versions earlier than 22.1R3-EVO;
* 22.2 versions earlier than 22.2R3-EVO.
CVSS Score
6.5
EPSS Score
0.0
Published
2024-01-12
An Improper Check for Unusual or Exceptional Conditions vulnerability in Routing Protocol Daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows a network-based, unauthenticated attacker to cause rpd to crash, leading to Denial of Service (DoS).
On all Junos OS and Junos OS Evolved platforms, when NETCONF and gRPC are enabled, and a specific query is executed via Dynamic Rendering (DREND), rpd will crash and restart. Continuous execution of this specific query will cause a sustained Denial of Service (DoS) condition.
This issue affects:
Juniper Networks Junos OS
* 22.2 versions earlier than 22.2R2-S2, 22.2R3;
* 22.3 versions earlier than 22.3R2, 22.3R3.
Juniper Networks Junos OS Evolved
* 22.2 versions earlier than 22.2R2-S2-EVO, 22.2R3-EVO;
* 22.3 versions earlier than 22.3R2-EVO, 22.3R3-EVO.
This issue does not affect Juniper Networks:
Junos OS versions earlier than 22.2R1;
Junos OS Evolved versions earlier than 22.2R1-EVO.
CVSS Score
7.5
EPSS Score
0.005
Published
2024-01-12
A Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in the Flow-processing Daemon (flowd) of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (Dos).
On SRX Series devices when two different threads try to simultaneously process a queue which is used for TCP events flowd will crash. One of these threads can not be triggered externally, so the exploitation of this race condition is outside the attackers direct control.
Continued exploitation of this issue will lead to a sustained DoS.
This issue affects Juniper Networks Junos OS:
* 21.2 versions earlier than 21.2R3-S5;
* 21.3 versions earlier than 21.3R3-S5;
* 21.4 versions earlier than 21.4R3-S4;
* 22.1 versions earlier than 22.1R3-S3;
* 22.2 versions earlier than 22.2R3-S1;
* 22.3 versions earlier than 22.3R2-S2, 22.3R3;
* 22.4 versions earlier than 22.4R2-S1, 22.4R3.
This issue does not affect Juniper Networks Junos OS versions earlier than 21.2R1.
CVSS Score
5.9
EPSS Score
0.002
Published
2024-01-12
A NULL Pointer Dereference vulnerability in Juniper Networks Junos OS Evolved on ACX7024, ACX7100-32C and ACX7100-48L allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).
If a specific IPv4 UDP packet is received and sent to the Routing Engine (RE) packetio crashes and restarts which causes a momentary traffic interruption. Continued receipt of such packets will lead to a sustained DoS.
This issue does not happen with IPv6 packets.
This issue affects Juniper Networks Junos OS Evolved on ACX7024, ACX7100-32C and ACX7100-48L:
* 21.4-EVO versions earlier than 21.4R3-S6-EVO;
* 22.1-EVO versions earlier than 22.1R3-S5-EVO;
* 22.2-EVO versions earlier than 22.2R2-S1-EVO, 22.2R3-EVO;
* 22.3-EVO versions earlier than 22.3R2-EVO.
This issue does not affect Juniper Networks Junos OS Evolved versions earlier than 21.4R1-EVO.
CVSS Score
7.5
EPSS Score
0.002
Published
2024-01-12
An Improper Check for Unusual or Exceptional Conditions vulnerability in the kernel of Juniper Network Junos OS on MX Series allows a network based attacker with low privileges to cause a denial of service.
If a scaled configuration for Source class usage (SCU) / destination class usage (DCU) (more than 10 route classes) is present and the SCU/DCU statistics are gathered by executing specific SNMP requests or CLI commands, a 'vmcore' for the RE kernel will be seen which leads to a device restart. Continued exploitation of this issue will lead to a sustained DoS.
This issue only affects MX Series devices with MPC10, MPC11 or LC9600, and MX304. No other MX Series devices are affected.
This issue affects Juniper Networks Junos OS:
* All versions earlier than 20.4R3-S9;
* 21.2 versions earlier than 21.2R3-S6;
* 21.3 versions earlier than 21.3R3-S5;
* 21.4 versions earlier than 21.4R3;
* 22.1 versions earlier than 22.1R3;
* 22.2 versions earlier than 22.2R2;
* 22.3 versions earlier than 22.3R2.
CVSS Score
6.5
EPSS Score
0.001
Published
2024-01-12
An Allocation of Resources Without Limits or Throttling vulnerability in the kernel of Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).
If a high rate of specific valid packets are processed by the routing engine (RE) this will lead to a loss of connectivity of the RE with other components of the chassis and thereby a complete and persistent system outage. Please note that a carefully designed lo0 firewall filter will block or limit these packets which should prevent this issue from occurring.
The following log messages can be seen when this issue occurs:
<host> kernel: nf_conntrack: nf_conntrack: table full, dropping packet
This issue affects Juniper Networks Junos OS Evolved:
* All versions earlier than 20.4R3-S7-EVO;
* 21.2R1-EVO and later versions;
* 21.4-EVO versions earlier than 21.4R3-S5-EVO;
* 22.1-EVO versions earlier than 22.1R3-S2-EVO;
* 22.2-EVO versions earlier than 22.2R3-EVO;
* 22.3-EVO versions earlier than 22.3R2-EVO;
* 22.4-EVO versions earlier than 22.4R2-EVO.
CVSS Score
7.5
EPSS Score
0.002
Published
2024-01-12
A Double Free vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX Series allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS).
In a remote access VPN scenario, if a "tcp-encap-profile" is configured and a sequence of specific packets is received, a flowd crash and restart will be observed.
This issue affects Juniper Networks Junos OS on SRX Series:
* All versions earlier than 20.4R3-S8;
* 21.2 versions earlier than 21.2R3-S6;
* 21.3 versions earlier than 21.3R3-S5;
* 21.4 versions earlier than 21.4R3-S5;
* 22.1 versions earlier than 22.1R3-S3;
* 22.2 versions earlier than 22.2R3-S3;
* 22.3 versions earlier than 22.3R3-S1;
* 22.4 versions earlier than 22.4R2-S2, 22.4R3.
CVSS Score
7.5
EPSS Score
0.003
Published
2024-01-12