5.5
MEDIUM
CVE-2018-11503
Discount Markdown Heap-Based Buffer Over-Read Denial of Service Vulnerability
Description

The isfootnote function in markdown.c in libmarkdown.a in DISCOUNT 2.2.3a allows remote attackers to cause a denial of service (heap-based buffer over-read) via a crafted file, as demonstrated by mkd2html.

INFO

Published Date :

May 26, 2018, 9:29 p.m.

Last Modified :

Oct. 3, 2019, 12:03 a.m.

Remotely Exploitable :

No

Impact Score :

3.6

Exploitability Score :

1.8
Public PoC/Exploit Available at Github

CVE-2018-11503 has a 2 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2018-11503 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 Debian debian_linux
1 Discount_project discount
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-2018-11503.

URL Resource
https://github.com/Orc/discount/issues/189#issuecomment-392247798 Issue Tracking Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/09/msg00009.html Mailing List Third Party Advisory
https://www.debian.org/security/2018/dsa-4293 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).

None

Shell

Updated: 4 years, 8 months ago
2 stars 2 fork 2 watcher
Born at : Feb. 25, 2019, 3:54 a.m. This repo has been linked 108 different CVEs too.

None

Shell

Updated: 8 months, 1 week ago
1 stars 1 fork 1 watcher
Born at : Sept. 10, 2018, 1:21 a.m. This repo has been linked 108 different CVEs too.

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

The following list is the news that have been mention CVE-2018-11503 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2018-11503 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]

    Oct. 03, 2019

    Action Type Old Value New Value
    Changed CWE CWE-119 CWE-119 CWE-125
  • Modified Analysis by [email protected]

    Mar. 21, 2019

    Action Type Old Value New Value
    Changed Reference Type https://www.debian.org/security/2018/dsa-4293 No Types Assigned https://www.debian.org/security/2018/dsa-4293 Third Party Advisory
    Changed Reference Type https://lists.debian.org/debian-lts-announce/2018/09/msg00009.html No Types Assigned https://lists.debian.org/debian-lts-announce/2018/09/msg00009.html Mailing List, Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Sep. 15, 2018

    Action Type Old Value New Value
    Added Reference https://www.debian.org/security/2018/dsa-4293 [No Types Assigned]
  • CVE Modified by [email protected]

    Sep. 09, 2018

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2018/09/msg00009.html [No Types Assigned]
  • Reanalysis by [email protected]

    Jul. 27, 2018

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Changed CVSS V2 (AV:N/AC:L/Au:N/C:N/I:N/A:P) (AV:N/AC:M/Au:N/C:N/I:N/A:P)
    Changed CVSS V3 AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
  • Initial Analysis by [email protected]

    Jun. 26, 2018

    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:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://github.com/Orc/discount/issues/189#issuecomment-392247798 No Types Assigned https://github.com/Orc/discount/issues/189#issuecomment-392247798 Issue Tracking, Third Party Advisory
    Added CWE CWE-119
    Added CPE Configuration OR *cpe:2.3:a:discount_project:discount:2.2.3:a:*:*:*:*:*:*
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-2018-11503 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-2018-11503 weaknesses.

Exploit Prediction

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

0.42 }} 0.00%

score

0.74625

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability