Memory leak in Juniper Junos OS

1) Memory leak

EUVDB-ID: #VU82487

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-22395

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

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

A Missing Release of Memory after Effective Lifetime vulnerability in the kernel of Juniper Networks Junos OS allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS).

 In an MPLS scenario specific packets destined to an Integrated Routing and Bridging (irb) interface of the device will cause a buffer (mbuf) to leak.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 19.3 - 22.1R1-S2

External links

http://supportportal.juniper.net/s/article/2023-01-Security-Bulletin-Junos-OS-In-an-MPLS-scenario-the-processing-of-specific-packets-to-the-device-causes-a-buffer-leak-and-ultimately-a-loss-of-connectivity-CVE-2023-22395

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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