Heap-based buffer overflow in HTMLDOC - CVE-2021-26259
Published: June 10, 2021
Vulnerability identifier: #VU54040
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-26259
CWE-ID: CWE-122
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 within the render_table_row() function in ps-pdf.cxx. A remote attacker can pass specially crafted JPEG image to the application, trigger heap-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-2021-26259
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