openEuler update for openvpn

1) Resource exhaustion

EUVDB-ID: #VU92937

Risk: Low

CVSSv4.0: 0.2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-5594

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The vulnerability exists due to application accepts control channel messages with nonprintable characters. A remote peer can send garbage to openvpn log, or cause high CPU load.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP4 - 24.03 LTS

openvpn-help: before 2.5.5-4

openvpn-devel: before 2.5.5-4

openvpn-debugsource: before 2.5.5-4

openvpn-debuginfo: before 2.5.5-4

openvpn: before 2.5.5-4

CPE2.3

• cpe:2.3:o:openeuler:openeuler:20.03:LTS SP4:*:*:*:*:*:*
• cpe:2.3:o:openeuler:openeuler:22.03:LTS SP1:*:*:*:*:*:*
• cpe:2.3:o:openeuler:openeuler:22.03:LTS SP3:*:*:*:*:*:*
• cpe:2.3:o:openeuler:openvpn-help:*:*:*:*:*:openeuler:*:*
• cpe:2.3:o:openeuler:openvpn-devel:*:*:*:*:*:openeuler:*:*
• cpe:2.3:o:openeuler:openvpn-debugsource:*:*:*:*:*:openeuler:*:*
• cpe:2.3:o:openeuler:openvpn-debuginfo:*:*:*:*:*:openeuler:*:*
• cpe:2.3:o:openeuler:openvpn:*:*:*:*:*:openeuler:*:*

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2024-1885

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.