Denial of service in Suricata
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2018-18956 |
| CWE-ID | CWE-20 |
| Exploitation vector | Network |
| Public exploit | This vulnerability is being exploited in the wild. |
| Vulnerable software Subscribe |
Suricata Server applications / IDS/IPS systems, Firewalls and proxy servers |
| Vendor | Open Information Security Foundation |
Security Bulletin
This security bulletin contains one high risk vulnerability.
1) Segmentation fault
EUVDB-ID: #VU15746
Risk: High
CVSSv3.1: 7.2 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:H/RL:O/RC:C]
CVE-ID: CVE-2018-18956
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists due to segmentation fault in the ProcessMimeEntity function in util-decode-mime.c when handling malicious input. A remote attacker can supply specially crafted input to the SMTP parser, trigger segfault and cause daemon crash.
Note: according to MITRE statement, the vulnerability has been exploited in the wild in November 2018.
Update to version 4.1.
Vulnerable software versionsSuricata: 4.0.0 - 4.0.5
External linkshttp://suricata-ids.org/2018/11/06/suricata-4-1-released/
http://github.com/OISF/suricata/commit/36e84b929cb37bd03943ed14749a4fef3ff1f61d
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.
