PT-2021-8098 · Htmldoc+3 · Htmldoc+3

Chibataiki · Published 2021-01-26 · Updated 2025-01-08 · CVE-2021-23158

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions htmldoc version 1.9.12

Description A flaw in htmldoc may result in a write-what-where condition, allowing an attacker to execute arbitrary code and cause denial of service. The issue is related to a double-free in the pspdf export() function, located in the ps-pdf.cxx component. This could enable a remote attacker to access confidential data, compromise its integrity, and disrupt service.

Recommendations For htmldoc version 1.9.12, consider disabling the pspdf export() function in ps-pdf.cxx as a temporary workaround until a patch is available. Restrict access to the ps-pdf.cxx component to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Double Free

Weakness Enumeration

CWE-415

Related Identifiers

BDU:2024-07290

CVE-2021-23158

DLA-2700-1

DSA-4928-1

MGASA-2021-0332

USN-7189-1

Affected Products

Astra Linux

Linuxmint

Ubuntu

Htmldoc

References · 33

• 🔥 https://github.com/michaelrsweet/htmldoc/issues/414 · Exploit
• https://github.com/michaelrsweet/htmldoc/commit/369b2ea1fd0d0537ba707f20a2f047b6afd2fbdc · Patch
• https://ubuntu.com/security/CVE-2021-34119 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-23191 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-23158 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-23158 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se17-bulletin-2021-1126SE17 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-26948 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-43579 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7189-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-23158 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-23206 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-2700-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-26252 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-23158 · Security Note