Denial of service in syslog-ng

1) Integer overflow

EUVDB-ID: #VU72142

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-2022-38725

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

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

The vulnerability exists due to integer overflow in the RFC3164 parser. A remote attacker can send specially crafted data to the service, trigger an integer overflow and perform a denial of service (DoS) attack.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability..

Vulnerable software versions

syslog-ng: 3.6.1 - 3.37.1

syslog-ng Premium Edition: 6.0.0 - 7.0.31

syslog-ng Store Box: 4.0.0 - 6.10.0

External links

http://github.com/syslog-ng/syslog-ng/security/advisories/GHSA-7932-4fc6-pvmc
http://support.oneidentity.com/product-notification/noti-00001203

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.