CVE-2024-21591 — CRITICAL (9.8)

Q: How severe is CVE-2024-21591?

CVE-2024-21591 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Q: Is there a patch for CVE-2024-21591?

Check the references section above for vendor advisories and patch information. Affected products include: Juniper Junos.

Vulnerability Description

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.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Juniper	Junos	< 20.4

Related Weaknesses (CWE)

CWE-787

References

https://curesec.com/blog/article/CVE-2024-21591_Juniper_Remote_Code_Exec.htmlExploitThird Party Advisory
https://supportportal.juniper.net/JSA75729Vendor Advisory
https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:HThird Party Advisory
https://curesec.com/blog/article/CVE-2024-21591_Juniper_Remote_Code_Exec.htmlExploitThird Party Advisory
https://supportportal.juniper.net/JSA75729Vendor Advisory
https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:HThird Party Advisory

FAQ

What is CVE-2024-21591?

CVE-2024-21591 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 ...

How severe is CVE-2024-21591?

CVE-2024-21591 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2024-21591?

Check the references section above for vendor advisories and patch information. Affected products include: Juniper Junos.