CVE-2018-18956
High PUBLISHEDThe 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...
Not yet in CISA KEV
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
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.
- CVE Published
- Nov 05, 2018
- Exploitation Reported
- Nov 05, 2018
- CVSS
- 7.5 High
- EPSS
- 2.8%
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| n/a |
n/a
|
n/a |
Affected |
CVE References
- lists.openinfosecfoundation.org/pipermail/oisf-users/2018-October/016227.html lists.openinfosecfoundation.org · CVE Record https://lists.openinfosecfoundation.org/pipermail/oisf-users/2018-Oct...
- redmine.openinfosecfoundation.org/issues/2658 redmine.openinfosecfoundation.org · CVE Record https://redmine.openinfosecfoundation.org/issues/2658#change-10374
- lists.openinfosecfoundation.org/pipermail/oisf-users/2018-November/016316.html lists.openinfosecfoundation.org · CVE Record https://lists.openinfosecfoundation.org/pipermail/oisf-users/2018-Nov...
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CVE First | 2018-11-05 21:00 UTC |
No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/Au:N/C:N/I:N/A:P
Exploitation Status
Exploited in the wild
Recorded 2018-11-05 21:00:00 UTC · CVE
Weaknesses (CWE)
-
Improper Restriction of Operations within the Bounds of a Memory Buffer
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
21:00 UTC over 7 years ago21:00 UTC · over 7 years ago
Added to KEVIntel KEV Feed
High-confidence, third-party attested exploitation
-
21:00 UTC over 7 years ago21:00 UTC · over 7 years ago
CVE published
Vulnerability disclosed publicly
-
00:00 UTC over 7 years ago00:00 UTC · over 7 years ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2018-18956
{
"cve_id": "CVE-2018-18956",
"title": "The ProcessMimeEntity function in util-decode-mime.c in Suricata 4.x before 4...",
"affected_vendor": "Suricata",
"affected_product": "Suricata",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "High",
"cvss_score": 7.5,
"epss_score": 0.02794,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}