QPDF 8.2.1 libqpdf/QPDFWriter.cc unparseChild PDF File input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.3$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in QPDF 8.2.1. Affected by this issue is the function QPDFWriter::unparseObject/QPDFWriter::unparseChild of the file libqpdf/QPDFWriter.cc. The manipulation as part of PDF File results in input validation. This vulnerability is known as CVE-2018-18020. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability, which was classified as problematic, was found in QPDF 8.2.1. Affected is the function QPDFWriter::unparseObject/QPDFWriter::unparseChild of the file libqpdf/QPDFWriter.cc. The manipulation as part of a PDF File leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. CVE summarizes:

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.

The bug was discovered 10/06/2018. The weakness was published 10/06/2018 (Website). The advisory is available at github.com. This vulnerability is traded as CVE-2018-18020 since 10/06/2018. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 3.3
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/06/2018 🔍
10/06/2018 +0 days 🔍
10/06/2018 +0 days 🔍
10/06/2018 +0 days 🔍
10/07/2018 +1 days 🔍
05/23/2023 +1689 days 🔍

Sourcesinfo

Product: github.com

Advisory: 243
Status: Not defined

CVE: CVE-2018-18020 (🔍)
GCVE (CVE): GCVE-0-2018-18020
GCVE (VulDB): GCVE-100-124950

Entryinfo

Created: 10/07/2018 08:10
Updated: 05/23/2023 08:01
Changes: 10/07/2018 08:10 (56), 03/30/2020 22:21 (1), 05/23/2023 08:01 (3)
Complete: 🔍
Cache ID: 216::103

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