Improper check for unusual or exceptional conditions in Juniper Junos OS

1) Improper check for unusual or exceptional conditions

EUVDB-ID: #VU88443

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-2024-30397

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

Exploit availability: No

Description

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

The vulnerability exists due to improper check for unusual or exceptional conditions error in the Public Key Infrastructure daemon (pkid). A remote non-authenticated attacker can cause Denial of Service (DoS).

The pkid is responsible for the certificate verification.

Upon a failed verification, the pkid uses all CPU resources and becomes unresponsive to future verification attempts.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 20.4R1 - 23.4R1-S1

External links

http://supportportal.juniper.net/s/article/2024-04-Security-Bulletin-Junos-OS-An-invalid-certificate-causes-a-Denial-of-Service-in-the-Internet-Key-Exchange-IKE-process-CVE-2024-30397

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.