Artifex Ghostscript up to 9.25 Access Restriction psi/zdevice2.c 7pk security

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Artifex Ghostscript up to 9.25. The impacted element is an unknown function of the file psi/zdevice2.c of the component Access Restriction. The manipulation leads to 7pk security. This vulnerability is traded as CVE-2018-19475. It is possible to initiate the attack remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Artifex Ghostscript up to 9.25 (Document Processing Software). It has been rated as critical. This issue affects an unknown functionality of the file psi/zdevice2.c of the component Access Restriction. The manipulation with an unknown input leads to a 7pk security vulnerability. Using CWE to declare the problem leads to CWE-254. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

psi/zdevice2.c in Artifex Ghostscript before 9.26 allows remote attackers to bypass intended access restrictions because available stack space is not checked when the device remains the same.

The bug was discovered 11/14/2018. The weakness was shared 11/23/2018 (Website). It is possible to read the advisory at git.ghostscript.com. The identification of this vulnerability is CVE-2018-19475 since 11/22/2018. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1211 according to MITRE ATT&CK.

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†). The entries VDB-124263, VDB-125336, VDB-125338 and VDB-125806 are related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

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

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: 7pk security
CWE: CWE-254
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

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: 3005fcb9bb160af199e761e03bc70a9f249a987e

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-2018-19475 (🔍)
GCVE (CVE): GCVE-0-2018-19475
GCVE (VulDB): GCVE-100-127079

OVAL: 🔍

SecurityFocus: 106154 - Ghostscript Multiple Security Bypass Vulnerabilities

See also: 🔍

Entryinfo

Created: 11/24/2018 10:14
Updated: 06/11/2023 10:05
Changes: 11/24/2018 10:14 (78), 04/14/2020 16:21 (4), 06/11/2023 10:05 (6)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you want to use VulDB in your project?

Use the official API to access entries easily!