UBUNTU-CVE-2021-34121

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Source
https://ubuntu.com/security/CVE-2021-34121
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-34121.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-34121
Upstream
Downstream
Related
Published
2023-07-18T14:15:00Z
Modified
2025-07-18T16:46:52Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - low
Summary
[none]
Details

An Out of Bounds flaw was discovered in htmodoc 1.9.12 in function parse_tree() in toc.cxx, this possibly leads to memory layout information leaking in the data. This might be used in a chain of vulnerability in order to reach code execution.

References

Affected packages

Ubuntu:Pro:14.04:LTS / htmldoc

Package

Name
htmldoc
Purl
pkg:deb/ubuntu/htmldoc@1.8.27-8ubuntu1+esm3?arch=source&distro=esm-infra-legacy/trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.8.27-8ubuntu1+esm3

Affected versions

1.*

1.8.27-8ubuntu1
1.8.27-8ubuntu1+esm1
1.8.27-8ubuntu1+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "htmldoc",
            "binary_version": "1.8.27-8ubuntu1+esm3"
        },
        {
            "binary_name": "htmldoc-common",
            "binary_version": "1.8.27-8ubuntu1+esm3"
        },
        {
            "binary_name": "htmldoc-dbgsym",
            "binary_version": "1.8.27-8ubuntu1+esm3"
        }
    ],
    "priority_reason": "No real security impact as this is a command-line utility that is not generally expected to handle untrusted input.",
    "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"
}

Ubuntu:Pro:16.04:LTS / htmldoc

Package

Name
htmldoc
Purl
pkg:deb/ubuntu/htmldoc@1.8.27-8ubuntu1.1+esm2?arch=source&distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.8.27-8ubuntu1.1+esm2

Affected versions

1.*

1.8.27-8ubuntu1
1.8.27-8ubuntu1.1
1.8.27-8ubuntu1.1+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "htmldoc",
            "binary_version": "1.8.27-8ubuntu1.1+esm2"
        },
        {
            "binary_name": "htmldoc-common",
            "binary_version": "1.8.27-8ubuntu1.1+esm2"
        },
        {
            "binary_name": "htmldoc-dbgsym",
            "binary_version": "1.8.27-8ubuntu1.1+esm2"
        }
    ],
    "priority_reason": "No real security impact as this is a command-line utility that is not generally expected to handle untrusted input.",
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Ubuntu:Pro:18.04:LTS / htmldoc

Package

Name
htmldoc
Purl
pkg:deb/ubuntu/htmldoc@1.9.2-1ubuntu0.2+esm1?arch=source&distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.9.2-1ubuntu0.2+esm1

Affected versions

1.*

1.8.27-8ubuntu2
1.8.27-8ubuntu3
1.9.2-1
1.9.2-1ubuntu0.1
1.9.2-1ubuntu0.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "htmldoc",
            "binary_version": "1.9.2-1ubuntu0.2+esm1"
        },
        {
            "binary_name": "htmldoc-common",
            "binary_version": "1.9.2-1ubuntu0.2+esm1"
        }
    ],
    "priority_reason": "No real security impact as this is a command-line utility that is not generally expected to handle untrusted input.",
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Ubuntu:Pro:20.04:LTS / htmldoc

Package

Name
htmldoc
Purl
pkg:deb/ubuntu/htmldoc@1.9.7-1ubuntu0.3+esm1?arch=source&distro=esm-apps/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.9.7-1ubuntu0.3+esm1

Affected versions

1.*

1.9.3-1
1.9.7-1
1.9.7-1build1
1.9.7-1ubuntu0.2
1.9.7-1ubuntu0.3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "htmldoc",
            "binary_version": "1.9.7-1ubuntu0.3+esm1"
        },
        {
            "binary_name": "htmldoc-common",
            "binary_version": "1.9.7-1ubuntu0.3+esm1"
        }
    ],
    "priority_reason": "No real security impact as this is a command-line utility that is not generally expected to handle untrusted input.",
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}