Vulnerability identifier: #VU94337

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-39549

CWE-ID: CWE-401

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Juniper Junos OS
Operating systems & Components / Operating system
Junos OS Evolved
Operating systems & Components / Operating system

Vendor: Juniper Networks, Inc.

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to missing release of memory after effective lifetime error in the routing process daemon (rpd). A remote non-authenticated attacker can send a malformed BGP Path attribute update which allocates memory used to log the bad path attribute.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 21.2R1 - 21.2R3-S6, 21.2R3-S7, 22.2R1 - 22.2R3-S2, 22.2R3-S3, 22.3R1 - 22.3R3-S1, 22.3R3-S2, 22.4R1 - 22.4R2-S2, 22.4R3-S1, 22.4R3-S2, 23.2R1 - 23.2R1-S1, 23.2R1-S2, 23.4R1-S1

Junos OS Evolved: 22.4R1-EVO - 22.4R3-EVO, 22.4R2-S2-EVO, 22.4R3-S1-EVO, 22.4R3-S2-EVO, 21.4R1-EVO - 21.4R3-S5-EVO, 21.4R3-S6-EVO, 21.4R3-S7-EVO, 23.2R1-EVO - 23.2R2-EVO, 23.2R1-S2-EVO, 22.3R1-EVO - 22.3R3-S1-EVO, 22.3R3-S2-EVO, 22.2-EVO - 22.2R3-S3-EVO, 21.2-EVO - 21.2R3-S6-EVO, 21.2R3-S7-EVO

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External links
http://supportportal.juniper.net/s/article/2024-07-Security-Bulletin-Junos-OS-Receipt-of-malformed-BGP-path-attributes-leads-to-a-memory-leak-CVE-2024-39549

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.