CVE-2018-18956
The ProcessMimeEntity function in util-decode-mime.c in Suricata 4.x before 4.0.6 allows remote attackers to cause a denial of service (segfault and daemon crash) via crafted input to the SMTP parser, as exploited in the wild in November 2018.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.79%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The ProcessMimeEntity function in util-decode-mime.c in Suricata 4.x before 4.0.6 allows remote attackers to cause a denial of service (segfault and daemon crash) via crafted input to the SMTP parser, as exploited in the wild in November 2018.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.79% probability · 86th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- suricata-ids/suricata
- Source
- cve@mitre.org
EPSS 2.8% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://lists.openinfosecfoundation.org/pipermail/oisf-users/2018-November/016316.htmlMailing List, Third Party Advisory
- https://lists.openinfosecfoundation.org/pipermail/oisf-users/2018-October/016227.htmlMailing List, Third Party Advisory
- https://redmine.openinfosecfoundation.org/issues/2658#change-10374Third Party Advisory
- https://lists.openinfosecfoundation.org/pipermail/oisf-users/2018-November/016316.htmlMailing List, Third Party Advisory
- https://lists.openinfosecfoundation.org/pipermail/oisf-users/2018-October/016227.htmlMailing List, Third Party Advisory
- https://redmine.openinfosecfoundation.org/issues/2658#change-10374Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.