Juniper Junos OS up to 22.4R2-S1 on SRX/EX J-Web out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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9.6$5k-$25k0.00

A vulnerability was found in Juniper Junos OS on SRX/EX (Router Operating System) and classified as very critical. Affected by this issue is an unknown function of the component J-Web. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

An Out-of-bounds Write vulnerability in J-Web of Juniper Networks Junos OS on SRX Series and EX Series allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS), or Remote Code Execution (RCE) and obtain root privileges on the device. This issue is caused by use of an insecure function allowing an attacker to overwrite arbitrary memory. This issue affects Juniper Networks Junos OS SRX Series and EX Series: * Junos OS versions earlier than 20.4R3-S9; * Junos OS 21.2 versions earlier than 21.2R3-S7; * Junos OS 21.3 versions earlier than 21.3R3-S5; * Junos OS 21.4 versions earlier than 21.4R3-S5; * Junos OS 22.1 versions earlier than 22.1R3-S4; * Junos OS 22.2 versions earlier than 22.2R3-S3; * Junos OS 22.3 versions earlier than 22.3R3-S2; * Junos OS 22.4 versions earlier than 22.4R2-S2, 22.4R3.

The weakness was disclosed 01/12/2024 as JSA75729. The advisory is available at supportportal.juniper.net. This vulnerability is handled as CVE-2024-21591 since 12/27/2023. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 01/12/2024).

Upgrading to version 20.4R3-S9, 21.2R3-S7, 21.3R3-S5, 21.4R3-S5, 22.1R3-S4, 22.2R3-S3, 22.3R3-S2, 22.4R2-S2 or 22.4R3 eliminates this vulnerability.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔒
VulDB CVSS-BT Score: 🔒
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 9.8
CNA Vector (Juniper Networks, Inc.): 🔒

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

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: 🔒

Upgrade: Junos OS 20.4R3-S9/21.2R3-S7/21.3R3-S5/21.4R3-S5/22.1R3-S4/22.2R3-S3/22.3R3-S2/22.4R2-S2/22.4R3

Timelineinfo

12/27/2023 CVE reserved
01/12/2024 +16 days Advisory disclosed
01/12/2024 +0 days VulDB entry created
01/12/2024 +0 days VulDB entry last update

Sourcesinfo

Vendor: juniper.net

Advisory: JSA75729
Status: Confirmed

CVE: CVE-2024-21591 (🔒)

Entryinfo

Created: 01/12/2024 07:17
Changes: 01/12/2024 07:17 (53)
Complete: 🔍
Cache ID: 3:9D9:103

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