CVE-2024-39552

Junos OS and Junos OS Evolved: Malformed BGP UPDATE causes RPD crash

Severity Score

8.7

*CVSS v4

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

MITRE

An Improper Handling of Exceptional Conditions vulnerability in the routing protocol daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows a network based, unauthenticated attacker to cause the RPD process to crash leading to a Denial of Service (DoS).

When a malformed BGP UPDATE packet is received over an established BGP session, RPD crashes and restarts.

Continuous receipt of the malformed BGP UPDATE messages will create a sustained Denial of Service (DoS) condition for impacted devices.

This issue affects eBGP and iBGP, in both IPv4 and IPv6 implementations. This issue requires a remote attacker to have at least one established BGP session.

This issue affects:

Juniper Networks Junos OS:
* All versions earlier than 20.4R3-S9;
* 21.2 versions earlier than 21.2R3-S7;
* 21.3 versions earlier than 21.3R3-S5;
* 21.4 versions earlier than 21.4R3-S6;
* 22.1 versions earlier than 22.1R3-S4;
* 22.2 versions earlier than 22.2R3-S3;
* 22.3 versions earlier than 22.3R3-S2;
* 22.4 versions earlier than 22.4R3;
* 23.2 versions earlier than 23.2R2.

Juniper Networks Junos OS Evolved:
* All versions earlier than 21.2R3-S7;
* 21.3-EVO versions earlier than 21.3R3-S5;
* 21.4-EVO versions earlier than 21.4R3-S8;
* 22.1-EVO versions earlier than 22.1R3-S4;
* 22.2-EVO versions earlier than 22.2R3-S3;
* 22.3-EVO versions earlier than 22.3R3-S2;
* 22.4-EVO versions earlier than 22.4R3;
* 23.2-EVO versions earlier than 23.2R2.

*Credits: Juniper SIRT would like to acknowledge and thank Matteo Memilli (mmemelli@amazon.com) from Amazon for responsibly reporting this vulnerability.

Attack Vector

Network

Attack Complexity

Low

Attack Requirements

None

Privileges Required

None

User Interaction

None

System

Vulnerable | Subsequent

Confidentiality

None

Integrity

None

Availability

High

Low

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-06-25 CVE Reserved
2024-07-11 CVE Published
2024-07-12 EPSS Updated
2024-08-02 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-755: Improper Handling of Exceptional Conditions

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://supportportal.juniper.net/JSA75726	2024-08-02

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				< 20.4R3-S9 Search vendor "Juniper Networks" for product "Junos OS" and version " < 20.4R3-S9"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				>= 21.2 < 21.2R3-S7 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 21.2 < 21.2R3-S7"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				>= 21.3 < 21.3R3-S6 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 21.3 < 21.3R3-S6"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				>= 21.4 < 21.4R3-S6 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 21.4 < 21.4R3-S6"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				>= 22.1 < 22.1R3-S4 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 22.1 < 22.1R3-S4"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				>= 22.2 < 22.2R3-S3 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 22.2 < 22.2R3-S3"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				>= 22.3 < 22.3R3-S2 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 22.3 < 22.3R3-S2"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				>= 22.4 < 22.4R3 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 22.4 < 22.4R3"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				>= 23.2 < 23.2R2 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 23.2 < 23.2R2"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Evolved Search vendor "Juniper Networks" for product "Junos OS Evolved"				< 21.2R3-S7-EVO Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " < 21.2R3-S7-EVO"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Evolved Search vendor "Juniper Networks" for product "Junos OS Evolved"				>= 21.3-EVO < 21.3R3-S5-EVO Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " >= 21.3-EVO < 21.3R3-S5-EVO"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Evolved Search vendor "Juniper Networks" for product "Junos OS Evolved"				>= 21.4-EVO < 21.4R3-S8-EVO Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " >= 21.4-EVO < 21.4R3-S8-EVO"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Evolved Search vendor "Juniper Networks" for product "Junos OS Evolved"				>= 22.1-EVO < 22.1R3-S4-EVO Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " >= 22.1-EVO < 22.1R3-S4-EVO"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Evolved Search vendor "Juniper Networks" for product "Junos OS Evolved"				>= 22.2-EVO < 22.2R3-S3-EVO Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " >= 22.2-EVO < 22.2R3-S3-EVO"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Evolved Search vendor "Juniper Networks" for product "Junos OS Evolved"				>= 22.3-EVO < 22.3R3-S2-EVO Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " >= 22.3-EVO < 22.3R3-S2-EVO"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Evolved Search vendor "Juniper Networks" for product "Junos OS Evolved"				>= 22.4-EVO < 22.4R3-EVO Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " >= 22.4-EVO < 22.4R3-EVO"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Evolved Search vendor "Juniper Networks" for product "Junos OS Evolved"				>= 23.2-EVO < 23.2R2-EVO Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " >= 23.2-EVO < 23.2R2-EVO"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Evolved Search vendor "Juniper Networks" for product "Junos OS Evolved"				>= 23.4-EVO < 23.4R1-EVO Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " >= 23.4-EVO < 23.4R1-EVO"		en		Affected