Artifex Ghostscript up to 9.25 Access Restriction psi/zicc.c type conversion

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Artifex Ghostscript up to 9.25. This affects an unknown function of the file psi/zicc.c of the component Access Restriction. The manipulation results in type conversion. This vulnerability is known as CVE-2018-19476. It is possible to launch the attack remotely. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Artifex Ghostscript up to 9.25 (Document Processing Software). Affected is some unknown functionality of the file psi/zicc.c of the component Access Restriction. The manipulation with an unknown input leads to a type conversion vulnerability. CWE is classifying the issue as CWE-704. The product does not correctly convert an object, resource, or structure from one type to a different type. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

psi/zicc.c in Artifex Ghostscript before 9.26 allows remote attackers to bypass intended access restrictions because of a setcolorspace type confusion.

The bug was discovered 11/14/2018. The weakness was published 11/23/2018 (Website). The advisory is shared for download at git.ghostscript.com. This vulnerability is traded as CVE-2018-19476 since 11/22/2018. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 9 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 119267 (Debian DLA-1598-1 : ghostscript security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197315 (Ubuntu Security Notification for Ghostscript Vulnerabilities (USN-3831-1)).

Upgrading to version 9.26 eliminates this vulnerability. A possible mitigation has been published 5 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (119267) and SecurityFocus (BID 106154†). Similar entries are available at VDB-124263, VDB-125336, VDB-125338 and VDB-125806. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Type conversion
CWE: CWE-704
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: 119267
Nessus Name: Debian DLA-1598-1 : ghostscript security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Ghostscript 9.26
Patch: 67d760ab775dae4efe803b5944b0439aa3c0b04a

Timelineinfo

11/14/2018 🔍
11/22/2018 +8 days 🔍
11/23/2018 +1 days 🔍
11/23/2018 +0 days 🔍
11/23/2018 +0 days 🔍
11/24/2018 +1 days 🔍
11/28/2018 +4 days 🔍
11/29/2018 +1 days 🔍
06/11/2023 +1655 days 🔍

Sourcesinfo

Vendor: artifex.com

Advisory: RHSA-2019:0229
Status: Confirmed

CVE: CVE-2018-19476 (🔍)
GCVE (CVE): GCVE-0-2018-19476
GCVE (VulDB): GCVE-100-127080

OVAL: 🔍

SecurityFocus: 106154 - Ghostscript Multiple Security Bypass Vulnerabilities

See also: 🔍

Entryinfo

Created: 11/24/2018 10:14
Updated: 06/11/2023 10:11
Changes: 11/24/2018 10:14 (78), 04/14/2020 16:24 (4), 06/11/2023 10:11 (6)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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