CVE-2021-23165

CRITICAL
Published Mar 16, 20224y ago · Modified Jun 17, 20262w ago
9.8 CVSS 3.1
Critical
Find Similar
Published Mar 16, 2022 4y ago
Last Modified Jun 17, 2026 2w ago

Description

A flaw was found in htmldoc before v1.9.12. Heap buffer overflow in pspdf_prepare_outpages(), in ps-pdf.cxx may lead to execute arbitrary code and denial of service.

CVSS Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 2

CWE-122
CWE-787 Out-of-bounds Write Memory Safety

Affected Products 1

VendorProductVersionRange
htmldoc_projecthtmldoc* <1.9.12

References 4

  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=1967014
    ExploitIssue TrackingPatchThird Party Advisory
  • github.com https://github.com/michaelrsweet/htmldoc/commit/6e8a95561988500b5b5ae4861b3b0cbf4fba517f
    PatchThird Party Advisory
  • github.com https://github.com/michaelrsweet/htmldoc/commit/6e8a95561988500b5b5ae4861b3b0cbf4fba517f.patch
    Mailing ListThird Party Advisory
  • github.com https://github.com/michaelrsweet/htmldoc/issues/413
    ExploitIssue TrackingThird Party Advisory

Remediation

  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=1967014
    ExploitIssue TrackingPatchThird Party Advisory
  • github.com https://github.com/michaelrsweet/htmldoc/commit/6e8a95561988500b5b5ae4861b3b0cbf4fba517f
    PatchThird Party Advisory