Stack-based buffer overflow in HTMLDOC - CVE-2021-23206
Published: June 10, 2021
Vulnerability identifier: #VU54038
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-23206
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing table attributes in parse_table() function in ps-pdf.cxx. A remote unauthenticated attacker can pass specially crafted data to the application, trigger stack-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
HTMLDOC
htmldoc (Debian package)
htmldoc (Debian package)
How to mitigate CVE-2021-23206
Install updates from vendor's website.
HTMLDOC - update to 1.9.12
htmldoc (Debian package) - update to 1.9.3-1+deb10u2
htmldoc (Debian package) - update to 1.9.3-1+deb10u2