PT-2021-8100 · Htmldoc+4 · Htmldoc+4

Chibataiki · Published 2021-01-26 · Updated 2025-02-05 · CVE-2021-23165

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions htmldoc versions prior to 1.9.12

Description A flaw was found in the htmldoc tool, specifically a heap buffer overflow in the pspdf prepare outpages() function, located in ps-pdf.cxx. This issue may lead to the execution of arbitrary code and denial of service. The vulnerability can be exploited by a remote attacker to access confidential data, compromise data integrity, and cause a denial of service.

Recommendations For versions prior to 1.9.12, update to version 1.9.12 or later to resolve the issue. As a temporary workaround, consider restricting access to the pspdf prepare outpages() function in ps-pdf.cxx until a patch is available.

Exploit

Fix

DoS

Heap Based Buffer Overflow

Memory Corruption

Weakness Enumeration

CWE-122

CWE-787

Related Identifiers

ALT-PU-2022-2627

ALT-PU-2022-2729

BDU:2024-07292

CVE-2021-23165

DLA-2700-1

DSA-4928-1

MGASA-2021-0332

ROSA-SA-2024-2399

USN-5438-1

USN-5438-2

Affected Products

Alt Linux

Astra Linux

Linuxmint

Ubuntu

Htmldoc

References · 28

• 🔥 https://github.com/michaelrsweet/htmldoc/issues/413 · Exploit
• 🔥 https://bugzilla.redhat.com/show_bug.cgi?id=1967014 · Exploit
• https://github.com/michaelrsweet/htmldoc/commit/6e8a95561988500b5b5ae4861b3b0cbf4fba517f · Patch
• https://ubuntu.com/security/CVE-2021-23165 · Vendor Advisory
• https://bdu.fstec.ru/vul/2024-07292 · Security Note
• https://osv.dev/vulnerability/USN-5438-1 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se17-bulletin-2021-1126SE17 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-5438-1 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4928-1 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2021-0332.html · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-23165 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-23165 · Vendor Advisory
• https://osv.dev/vulnerability/USN-5438-2 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-23165 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-23165 · Security Note