UBUNTU-CVE-2018-18020

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Source
https://ubuntu.com/security/CVE-2018-18020
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-18020.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2018-18020
Upstream
Downstream
Related
Published
2018-10-06T14:29:00Z
Modified
2025-07-18T16:44:47Z
Severity
  • 3.3 (Low) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L CVSS Calculator
  • Ubuntu - low
Summary
[none]
Details

In QPDF 8.2.1, in libqpdf/QPDFWriter.cc, QPDFWriter::unparseObject and QPDFWriter::unparseChild have recursive calls for a long time, which allows remote attackers to cause a denial of service via a crafted PDF file.

References

Affected packages

Ubuntu:Pro:16.04:LTS / qpdf

Package

Name
qpdf
Purl
pkg:deb/ubuntu/qpdf@8.0.2-3~16.04.1+esm1?arch=source&distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.0.2-3~16.04.1+esm1

Affected versions

5.*

5.1.3-2
5.1.3-3
5.2.0-1
5.2.0-2

6.*

6.0.0-2

8.*

8.0.2-3~16.04.1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "libqpdf-dev",
            "binary_version": "8.0.2-3~16.04.1+esm1"
        },
        {
            "binary_name": "libqpdf21",
            "binary_version": "8.0.2-3~16.04.1+esm1"
        },
        {
            "binary_name": "libqpdf21-dbgsym",
            "binary_version": "8.0.2-3~16.04.1+esm1"
        },
        {
            "binary_name": "qpdf",
            "binary_version": "8.0.2-3~16.04.1+esm1"
        },
        {
            "binary_name": "qpdf-dbgsym",
            "binary_version": "8.0.2-3~16.04.1+esm1"
        }
    ]
}

Ubuntu:18.04:LTS / qpdf

Package

Name
qpdf
Purl
pkg:deb/ubuntu/qpdf@8.0.2-3ubuntu0.1?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.0.2-3ubuntu0.1

Affected versions

7.*

7.0.0-1
7.1.0-1
7.1.1-1

8.*

8.0.0-1
8.0.1-1
8.0.2-1
8.0.2-3

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libqpdf-dev",
            "binary_version": "8.0.2-3ubuntu0.1"
        },
        {
            "binary_name": "libqpdf21",
            "binary_version": "8.0.2-3ubuntu0.1"
        },
        {
            "binary_name": "libqpdf21-dbgsym",
            "binary_version": "8.0.2-3ubuntu0.1"
        },
        {
            "binary_name": "qpdf",
            "binary_version": "8.0.2-3ubuntu0.1"
        },
        {
            "binary_name": "qpdf-dbgsym",
            "binary_version": "8.0.2-3ubuntu0.1"
        }
    ]
}