MitM attack in syslog-ng

1) Improper neutralization of wildcards or matching symbols

EUVDB-ID: #VU108768

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-47619

CWE-ID: CWE-155 - Improper Neutralization of Wildcards or Matching Symbols

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists within the tls_wildcard_match() function when handling host names with wildcards. A remote attacker can bypass expected security restrictions.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

syslog-ng: 3.6.1 - 4.8.1

CPE2.3

• cpe:2.3:a:one_identity:syslog-ng:3.6.1:*:*:*:*:*:*:*
• cpe:2.3:a:one_identity:syslog-ng:3.6.2:*:*:*:*:*:*:*
• cpe:2.3:a:one_identity:syslog-ng:3.6.3:*:*:*:*:*:*:*

External links

https://github.com/syslog-ng/syslog-ng/security/advisories/GHSA-xr54-gx74-fghg

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.