CVE-2024-39547
Oct. 15, 2024, 12:58 p.m.
Tags
CVSS Score
Product(s) Impacted
Juniper Networks Junos OS
- All versions before 21.2R3-S8
- 21.4 before 21.4R3-S7
- 22.1 before 22.1R3-S6
- 22.2 before 22.2R3-S4
- 22.3 before 22.3R3-S3
- 22.4 before 22.4R3-S2
- 23.2 before 23.2R2-S2
- 24.2 before 24.2R2
Juniper Networks Junos OS Evolved
- All versions before 21.4R3-S7-EVO
- 22.2 before 22.2R3-S4-EVO
- 22.3 before 22.3R3-S3-EVO
- 22.4 before 22.4R3-S2-EVO
- 23.2 before 23.2R2-EVO
Description
An Improper Handling of Exceptional Conditions vulnerability in the rpd-server of Juniper Networks Junos OS and Junos OS Evolved within cRPD allows an unauthenticated network-based attacker sending crafted TCP traffic to the routing engine (RE) to cause a CPU-based Denial of Service (DoS). If specially crafted TCP traffic is received by the control plane, or a TCP session terminates unexpectedly, it will cause increased control plane CPU utilization by the rpd-server process. While not explicitly required, the impact is more severe when RIB sharding is enabled. Task accounting shows unexpected reads by the RPD Server jobs for shards: user@junos> show task accounting detail ... read:RPD Server.0.0.0.0+780.192.168.0.78+48886 TOT:00000003.00379787 MAX:00000000.00080516 RUNS: 233888\ read:RPD Server.0.0.0.0+780.192.168.0.78+49144 TOT:00000004.00007565 MAX:00000000.00080360 RUNS: 233888\ read:RPD Server.0.0.0.0+780.192.168.0.78+49694 TOT:00000003.00600584 MAX:00000000.00080463 RUNS: 233888\ read:RPD Server.0.0.0.0+780.192.168.0.78+50246 TOT:00000004.00346998 MAX:00000000.00080338 RUNS: 233888\ This issue affects: Junos OS with cRPD: * All versions before 21.2R3-S8, * 21.4 before 21.4R3-S7, * 22.1 before 22.1R3-S6, * 22.2 before 22.2R3-S4, * 22.3 before 22.3R3-S3, * 22.4 before 22.4R3-S2, * 23.2 before 23.2R2-S2, * 24.2 before 24.2R2; Junos OS Evolved with cRPD: * All versions before 21.4R3-S7-EVO, * 22.2 before 22.2R3-S4-EVO, * 22.3 before 22.3R3-S3-EVO, * 22.4 before 22.4R3-S2-EVO, * 23.2 before 23.2R2-EVO.
Weaknesses
CWE-755
Improper Handling of Exceptional Conditions
The product does not handle or incorrectly handles an exceptional condition.
CWE ID: 755Date
Published: Oct. 11, 2024, 4:15 p.m.
Last Modified: Oct. 15, 2024, 12:58 p.m.
Status : Awaiting Analysis
CVE has been recently published to the CVE List and has been received by the NVD.
More infoSource
sirt@juniper.net
CVSS Data
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Base Score
Exploitability Score
Impact Score
Base Severity
HIGHCVSS Vector String
The CVSS vector string provides an in-depth view of the vulnerability metrics.
View Vector StringCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H