7.5
HIGH
CVE-2018-18898
Best Practical Request Tracker Email Address Parsing Algorithmic Complexity Denial of Service
Description

The email-ingestion feature in Best Practical Request Tracker 4.1.13 through 4.4 allows denial of service by remote attackers via an algorithmic complexity attack on email address parsing.

INFO

Published Date :

March 21, 2019, 4 p.m.

Last Modified :

Nov. 7, 2023, 2:55 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2018-18898 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 Canonical ubuntu_linux
1 Fedoraproject fedora
1 Debian debian_linux
1 Bestpractical request_tracker
References to Advisories, Solutions, and Tools

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-2018-18898 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2018-18898 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
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CPJVDT77ZPRU5Z2BEMZM7EBY6WZHUATZ/ [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YR46PPHBEM76DNN4DEQMAYIKLCO3TQU2/ [No types assigned]
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/YR46PPHBEM76DNN4DEQMAYIKLCO3TQU2/
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/CPJVDT77ZPRU5Z2BEMZM7EBY6WZHUATZ/
  • Modified Analysis by [email protected]

    Jan. 20, 2023

    Action Type Old Value New Value
    Removed CVSS V3 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://lists.debian.org/debian-lts-announce/2020/02/msg00009.html No Types Assigned https://lists.debian.org/debian-lts-announce/2020/02/msg00009.html Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/CPJVDT77ZPRU5Z2BEMZM7EBY6WZHUATZ/ Third Party Advisory https://lists.fedoraproject.org/archives/list/[email protected]/message/CPJVDT77ZPRU5Z2BEMZM7EBY6WZHUATZ/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/YR46PPHBEM76DNN4DEQMAYIKLCO3TQU2/ Third Party Advisory https://lists.fedoraproject.org/archives/list/[email protected]/message/YR46PPHBEM76DNN4DEQMAYIKLCO3TQU2/ Mailing List, Third Party Advisory
    Changed Reference Type https://usn.ubuntu.com/4517-1/ No Types Assigned https://usn.ubuntu.com/4517-1/ Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Sep. 22, 2020

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/4517-1/ [No Types Assigned]
  • CWE Remap by [email protected]

    Aug. 24, 2020

    Action Type Old Value New Value
    Changed CWE CWE-20 CWE-400
  • CVE Modified by [email protected]

    Feb. 12, 2020

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2020/02/msg00009.html [No Types Assigned]
  • Reanalysis by [email protected]

    Jul. 16, 2019

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:bestpractical:request_tracker:*:*:*:*:*:*:*:* versions from (including) 4.1.13 up to (including) 4.4 OR *cpe:2.3:a:bestpractical:request_tracker:*:*:*:*:*:*:*:* versions from (including) 4.1.13 up to (including) 4.4.0
  • Initial Analysis by [email protected]

    Mar. 21, 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://bestpractical.com/download-page No Types Assigned https://bestpractical.com/download-page Product, Release Notes
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/YR46PPHBEM76DNN4DEQMAYIKLCO3TQU2/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/YR46PPHBEM76DNN4DEQMAYIKLCO3TQU2/ Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/CPJVDT77ZPRU5Z2BEMZM7EBY6WZHUATZ/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/CPJVDT77ZPRU5Z2BEMZM7EBY6WZHUATZ/ Third Party Advisory
    Added CWE CWE-20
    Added CPE Configuration OR *cpe:2.3:a:bestpractical:request_tracker:*:*:*:*:*:*:*:* versions from (including) 4.1.13 up to (including) 4.4
    Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:28:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
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.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2018-18898 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2018-18898 weaknesses.

Exploit Prediction

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

1.73 }} 0.50%

score

0.88191

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability