Out-of-bounds read in DISCOUNT and Debian Linux - CVE-2018-11504
Published: May 26, 2018 / Updated: August 8, 2020
Vulnerability identifier: #VU37108
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2018-11504
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: John Gruber
Debian
Debian
Affected software:
DISCOUNT
Debian Linux
DISCOUNT
Debian Linux
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in The islist function in markdown.c in libmarkdown.a in DISCOUNT 2.2.3a. A remote attacker can perform a denial of service (heap-based buffer over-read) via a crafted file, as demonstrated by mkd2html.
How to mitigate CVE-2018-11504
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.