Vulnerability Name:

CVE-2018-11503 (CCN-143915)

Assigned:2018-05-23
Published:2018-05-23
Updated:2019-10-03
Summary: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.
CVSS v3 Severity:5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
4.9 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
3.3 Low (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)
2.9 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
1.7 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-125
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2018-11503

Source: XF
Type: UNKNOWN
discount-cve201811503-dos(143915)

Source: CCN
Type: discount GIT Repository
Several heap buffer overflow issues have been found. #189

Source: MISC
Type: Issue Tracking, Third Party Advisory
https://github.com/Orc/discount/issues/189#issuecomment-392247798

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20180908 [SECURITY] [DLA 1499-1] discount security update

Source: DEBIAN
Type: Third Party Advisory
DSA-4293

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2018-11503

Vulnerable Configuration:Configuration 1:
  • cpe:/a:discount_project:discount:2.2.3:a:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/o:debian:debian_linux:8.0:*:*:*:*:*:*:*
  • OR cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.xenial:def:2018115030000000
    V
    		CVE-2018-11503 on Ubuntu 16.04 LTS (xenial) - medium.
    2018-05-26
    oval:com.ubuntu.artful:def:201811503000
    V
    		CVE-2018-11503 on Ubuntu 17.10 (artful) - untriaged.
    2018-05-26
    oval:com.ubuntu.xenial:def:201811503000
    V
    		CVE-2018-11503 on Ubuntu 16.04 LTS (xenial) - untriaged.
    2018-05-26
    oval:com.ubuntu.disco:def:2018115030000000
    V
    		CVE-2018-11503 on Ubuntu 19.04 (disco) - untriaged.
    2018-05-26
    oval:com.ubuntu.bionic:def:201811503000
    V
    		CVE-2018-11503 on Ubuntu 18.04 LTS (bionic) - untriaged.
    2018-05-26
    oval:com.ubuntu.cosmic:def:2018115030000000
    V
    		CVE-2018-11503 on Ubuntu 18.10 (cosmic) - untriaged.
    2018-05-26
    oval:com.ubuntu.cosmic:def:201811503000
    V
    		CVE-2018-11503 on Ubuntu 18.10 (cosmic) - untriaged.
    2018-05-26
    oval:com.ubuntu.bionic:def:2018115030000000
    V
    		CVE-2018-11503 on Ubuntu 18.04 LTS (bionic) - medium.
    2018-05-26
    oval:com.ubuntu.trusty:def:201811503000
    V
    		CVE-2018-11503 on Ubuntu 14.04 LTS (trusty) - untriaged.
    2018-05-26
    BACK
    discount_project discount 2.2.3 a
    debian debian linux 8.0
    debian debian linux 9.0