7.5
HIGH
CVE-2018-18956
Suricata SMTP ProcessMimeEntity Denial of Service
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.

INFO

Published Date :

Nov. 5, 2018, 9:29 p.m.

Last Modified :

Aug. 24, 2020, 5:37 p.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2018-18956 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Suricata-ids suricata
1 Oisf suricata
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2018-18956.

URL Resource
https://lists.openinfosecfoundation.org/pipermail/oisf-users/2018-November/016316.html Mailing List Third Party Advisory
https://lists.openinfosecfoundation.org/pipermail/oisf-users/2018-October/016227.html Mailing List Third Party Advisory
https://redmine.openinfosecfoundation.org/issues/2658#change-10374 Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2018-18956 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2018-18956 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CWE Remap by [email protected]

    Aug. 24, 2020

    Action Type Old Value New Value
    Changed CWE CWE-20 CWE-119
  • Initial Analysis by [email protected]

    Jan. 30, 2019

    Action Type Old Value New Value
    Added CVSS V2 (AV:N/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://redmine.openinfosecfoundation.org/issues/2658#change-10374 No Types Assigned https://redmine.openinfosecfoundation.org/issues/2658#change-10374 Third Party Advisory
    Changed Reference Type https://lists.openinfosecfoundation.org/pipermail/oisf-users/2018-November/016316.html No Types Assigned https://lists.openinfosecfoundation.org/pipermail/oisf-users/2018-November/016316.html Mailing List, Third Party Advisory
    Changed Reference Type https://lists.openinfosecfoundation.org/pipermail/oisf-users/2018-October/016227.html No Types Assigned https://lists.openinfosecfoundation.org/pipermail/oisf-users/2018-October/016227.html Mailing List, Third Party Advisory
    Added CWE CWE-20
    Added CPE Configuration OR *cpe:2.3:a:suricata-ids:suricata:*:*:*:*:*:*:*:* versions from (including) 4.0.0 up to (excluding) 4.0.6
  • CVE Modified by [email protected]

    Nov. 08, 2018

    Action Type Old Value New Value
    Changed Description The ProcessMimeEntity function in util-decode-mime.c in Suricata 4.x through 4.0.5 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. 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.
    Added Reference https://lists.openinfosecfoundation.org/pipermail/oisf-users/2018-November/016316.html [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.55 }} 0.01%

score

0.77871

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
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Scope
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Integrity
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