CVE-2018-9918

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Source
https://nvd.nist.gov/vuln/detail/CVE-2018-9918
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-9918.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2018-9918
Downstream
Related
Published
2018-04-10T18:29:00Z
Modified
2025-09-16T06:58:17.699690Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

libqpdf.a in QPDF through 8.0.2 mishandles certain "expected dictionary key but found non-name object" cases, allowing remote attackers to cause a denial of service (stack exhaustion), related to the QPDFObjectHandle and QPDF_Dictionary classes, because nesting in direct objects is not restricted.

References

Affected packages

Debian:11 / qpdf

Package

Name
qpdf
Purl
pkg:deb/debian/qpdf?arch=source

Affected ranges

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

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / qpdf

Package

Name
qpdf
Purl
pkg:deb/debian/qpdf?arch=source

Affected ranges

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

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / qpdf

Package

Name
qpdf
Purl
pkg:deb/debian/qpdf?arch=source

Affected ranges

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

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / qpdf

Package

Name
qpdf
Purl
pkg:deb/debian/qpdf?arch=source

Affected ranges

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

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Git / github.com/qpdf/qpdf

Affected ranges

Type
GIT
Repo
https://github.com/qpdf/qpdf
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
b4d6cf6836ce025ba1811b7bbec52680c7204223

Affected versions

release-qpdf-2.*

release-qpdf-2.0
release-qpdf-2.0.1
release-qpdf-2.0.2
release-qpdf-2.0.3
release-qpdf-2.0.4
release-qpdf-2.0.5
release-qpdf-2.0.6
release-qpdf-2.1
release-qpdf-2.1.1
release-qpdf-2.1.2
release-qpdf-2.1.3
release-qpdf-2.1.4
release-qpdf-2.1.5
release-qpdf-2.1.rc1
release-qpdf-2.2.0
release-qpdf-2.2.1
release-qpdf-2.2.2
release-qpdf-2.2.3
release-qpdf-2.2.4
release-qpdf-2.2.rc1
release-qpdf-2.3.0
release-qpdf-2.3.1

release-qpdf-3.*

release-qpdf-3.0.0
release-qpdf-3.0.1
release-qpdf-3.0.2
release-qpdf-3.0.rc1

release-qpdf-4.*

release-qpdf-4.0.0
release-qpdf-4.0.1
release-qpdf-4.1.0
release-qpdf-4.2.0

release-qpdf-5.*

release-qpdf-5.0.0
release-qpdf-5.0.1
release-qpdf-5.1.0
release-qpdf-5.1.1
release-qpdf-5.1.2
release-qpdf-5.1.3
release-qpdf-5.2.0

release-qpdf-6.*

release-qpdf-6.0.0

release-qpdf-7.*

release-qpdf-7.0.0
release-qpdf-7.0.b1
release-qpdf-7.1.0
release-qpdf-7.1.1

release-qpdf-8.*

release-qpdf-8.0.0
release-qpdf-8.0.1
release-qpdf-8.0.2
release-qpdf-8.0.a1
release-qpdf-8.0.rc1
release-qpdf-8.0.rc2
release-qpdf-8.0.rc3

Database specific 

{
    "vanir_signatures": [
        {
            "id": "CVE-2018-9918-249879d0",
            "digest": {
                "line_hashes": [
                    "181739345319500568680739432924015967377",
                    "106959424485635183592864499561300455322",
                    "33834260254958747297438551673392020084",
                    "172637144567233369777621291369876028934",
                    "16267163913427358820904854266060915297",
                    "75590030690278665368514097307259967412",
                    "111827253706210392211691782529734872093",
                    "207665020818809464945553329770339154989",
                    "304524329726436421318641378340825999579"
                ],
                "threshold": 0.9
            },
            "signature_version": "v1",
            "deprecated": false,
            "target": {
                "file": "libqpdf/QPDFObjectHandle.cc"
            },
            "signature_type": "Line",
            "source": "https://github.com/qpdf/qpdf/commit/b4d6cf6836ce025ba1811b7bbec52680c7204223"
        },
        {
            "id": "CVE-2018-9918-9be83622",
            "digest": {
                "length": 7243.0,
                "function_hash": "338132264288561279274696630611627217117"
            },
            "signature_version": "v1",
            "deprecated": false,
            "target": {
                "file": "libqpdf/QPDFObjectHandle.cc",
                "function": "QPDFObjectHandle::parseInternal"
            },
            "signature_type": "Function",
            "source": "https://github.com/qpdf/qpdf/commit/b4d6cf6836ce025ba1811b7bbec52680c7204223"
        }
    ]
}