Juniper Junos OS on MX/SRX improper validation of syntactic correctness of input

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.3	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as critical has been found in Juniper Junos OS on MX/SRX. This impacts an unknown function. Such manipulation leads to improper validation of syntactic correctness of input. This vulnerability is listed as CVE-2023-28985. The attack may be performed from remote. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Juniper Junos OS on MX/SRX (Router Operating System) (the affected version unknown). It has been rated as critical. Affected by this issue is an unknown part. The manipulation with an unknown input leads to a improper validation of syntactic correctness of input vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. CVE summarizes:

An Improper Validation of Syntactic Correctness of Input vulnerability in Intrusion Detection and Prevention (IDP) of Juniper Networks SRX Series and MX Series allows an unauthenticated, network-based attacker to cause Denial of Service (DoS). Continued receipt of this specific packet will cause a sustained Denial of Service condition. On all SRX Series and MX Series platforms, where IDP is enabled and a specific malformed SSL packet is received, the SSL detector crashes leading to an FPC core. This issue affects Juniper Networks SRX Series and MX Series prior to SigPack 3598. In order to identify the current SigPack version, following command can be used: user@junos# show security idp security-package-version

The weakness was presented 07/14/2023 as JSA71662. The advisory is shared for download at supportportal.juniper.net. This vulnerability is handled as CVE-2023-28985 since 03/29/2023. There are neither technical details nor an exploit publicly available.

Upgrading eliminates this vulnerability.

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Productinfo

Type

Router Operating System

Vendor

Juniper

Name

Junos OS

License

commercial

Website

Vendor: https://www.juniper.net/

CPE 2.3info

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CPE 2.2info

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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

03/29/2023 🔍
07/14/2023 +107 days 🔍
07/14/2023 +0 days 🔍
07/14/2023 +0 days 🔍

Sourcesinfo

Vendor: juniper.net

Advisory: JSA71662
Status: Confirmed

CVE: CVE-2023-28985 (🔍)
GCVE (CVE): GCVE-0-2023-28985
GCVE (VulDB): GCVE-100-234188

Entryinfo

Created: 07/14/2023 20:30
Changes: 07/14/2023 20:30 (49)
Complete: 🔍
Cache ID: 216::103