Juniper Junos OS Packet Forwarding Engine improper validation of syntactic correctness of input

CVSS Meta Temp Score
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Juniper Junos OS. Affected by this issue is some unknown functionality of the component Packet Forwarding Engine. Performing a manipulation results in improper validation of syntactic correctness of input. This vulnerability is known as CVE-2024-21595. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Juniper Junos OS (Router Operating System) (version now known). This affects some unknown processing of the component Packet Forwarding Engine. The manipulation with an unknown input leads to a improper validation of syntactic correctness of input vulnerability. CWE is classifying the issue as CWE-1286. The product receives input that is expected to be well-formed - i.e., to comply with a certain syntax - but it does not validate or incorrectly validates that the input complies with the syntax. This is going to have an impact on availability. The summary by CVE is:

An Improper Validation of Syntactic Correctness of Input vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS). If an attacker sends high rate of specific ICMP traffic to a device with VXLAN configured, this causes a deadlock of the PFE and results in the device becoming unresponsive. A manual restart will be required to recover the device. This issue only affects EX4100, EX4400, EX4600, QFX5000 Series devices. This issue affects: Juniper Networks Junos OS * 21.4R3 versions earlier than 21.4R3-S4; * 22.1R3 versions earlier than 22.1R3-S3; * 22.2R2 versions earlier than 22.2R3-S1; * 22.3 versions earlier than 22.3R2-S2, 22.3R3; * 22.4 versions earlier than 22.4R2; * 23.1 versions earlier than 23.1R2.

The weakness was published 01/12/2024 as JSA75734. It is possible to read the advisory at advisory.juniper.net. This vulnerability is uniquely identified as CVE-2024-21595 since 12/27/2023. The technical details are unknown and an exploit is not publicly available.

Upgrading eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (Juniper Networks, Inc.): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper validation of syntactic correctness of input
CWE: CWE-1286 / CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/27/2023 🔍
01/12/2024 +16 days 🔍
01/12/2024 +0 days 🔍
01/12/2024 +0 days 🔍

Sourcesinfo

Vendor: juniper.net

Advisory: JSA75734
Status: Confirmed

CVE: CVE-2024-21595 (🔍)
GCVE (CVE): GCVE-0-2024-21595
GCVE (VulDB): GCVE-100-250515

Entryinfo

Created: 01/12/2024 07:30
Changes: 01/12/2024 07:30 (50)
Complete: 🔍
Cache ID: 216::103

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