Denial of service in Junos OS kernel

1) Improper Check for Unusual or Exceptional Conditions

EUVDB-ID: #VU75093

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-2023-28979

CWE-ID: CWE-754 - Improper Check for Unusual or Exceptional Conditions

Exploit availability: No

Description

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

The vulnerability exists due to improper error handling in the kernel of Juniper Networks Junos OS. A remote attacker on the local network can send specially crafted IPv6 packets to the affected device and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 19.3 - 22.2R1-S2

External links

http://supportportal.juniper.net/s/article/2023-04-Security-Bulletin-Junos-OS-In-a-6PE-scenario-upon-receipt-of-a-specific-IPv6-packet-an-integrity-check-fails-CVE-2023-28979

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.