Artifex Ghostscript up to 9.25 PDF File input validation

CVSS Meta Temp Score
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CTI Interest Score
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4.3$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Artifex Ghostscript up to 9.25. This issue affects some unknown processing. The manipulation as part of PDF File leads to input validation. This vulnerability is uniquely identified as CVE-2018-19478. Local access is required to approach this attack. No exploit exists. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in Artifex Ghostscript up to 9.25 (Document Processing Software). It has been rated as problematic. This issue affects some unknown functionality. The manipulation as part of a PDF File leads to a input validation vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. The summary by CVE is:

In Artifex Ghostscript before 9.26, a carefully crafted PDF file can trigger an extremely long running computation when parsing the file.

The bug was discovered 11/20/2018. The weakness was disclosed 01/02/2019 (Website). It is possible to read the advisory at lists.debian.org. The identification of this vulnerability is CVE-2018-19478 since 11/22/2018. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 119240 (Artifex Ghostscript < 9.26 PostScript Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 277610 (Fedora Security Update for ghostscript (FEDORA-2019-077a3f23c0)).

Upgrading to version 9.26 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.ghostscript.com. The best possible mitigation is suggested to be patching the affected component. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (119240) and SecurityFocus (BID 106445†). The entry VDB-128248 is pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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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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Nessus ID: 119240
Nessus Name: Artifex Ghostscript < 9.26 PostScript Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Upgrade: Ghostscript 9.26
Patch: 0a7e5a1c309fa0911b892fa40996a7d55d90bace

Timelineinfo

11/20/2018 🔍
11/20/2018 +0 days 🔍
11/22/2018 +2 days 🔍
11/28/2018 +6 days 🔍
01/02/2019 +35 days 🔍
01/02/2019 +0 days 🔍
01/02/2019 +0 days 🔍
01/03/2019 +1 days 🔍
06/22/2023 +1631 days 🔍

Sourcesinfo

Vendor: artifex.com

Advisory: DLA 1620-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-19478 (🔍)
GCVE (CVE): GCVE-0-2018-19478
GCVE (VulDB): GCVE-100-128627
SecurityFocus: 106445 - Artifex Ghostscript CVE-2018-19478 Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 01/03/2019 12:42
Updated: 06/22/2023 17:59
Changes: 01/03/2019 12:42 (70), 04/25/2020 18:10 (9), 06/22/2023 17:59 (5)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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