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.
7.6	$0-$5k	0.00

A vulnerability, which was classified as critical, has been found in Artifex Ghostscript up to 9.23 (Document Processing Software). This issue affects the function gssetresolution/gsgetresolution. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In Artifex Ghostscript before 9.24, gssetresolution and gsgetresolution allow attackers to have an unspecified impact.

The bug was discovered 08/24/2018. The weakness was published 09/05/2018 by Tavis Ormandy (Website). It is possible to read the advisory at git.ghostscript.com. The identification of this vulnerability is CVE-2018-16543 since 09/05/2018. 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. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 12 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 117595 (Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : ghostscript vulnerabilities (USN-3768-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171620 (SUSE Enterprise Linux Security Update for ghostscript (SUSE-SU-2018:2975-1)).

Upgrading to version 9.24 eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (117595). Similar entries are available at 123342, 123596, 123627 and 123634.

Productinfo

Type

• Document Processing Software

Vendor

• Artifex

Name

• Ghostscript

Version

• 9.0
• 9.1
• 9.2
• 9.3
• 9.4
• 9.5
• 9.6
• 9.7
• 9.8
• 9.9
• 9.10
• 9.11
• 9.12
• 9.13
• 9.14
• 9.15
• 9.16
• 9.17
• 9.18
• 9.19
• 9.20
• 9.21
• 9.22
• 9.23

License

• free

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.6

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 117595
Nessus Name: Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : ghostscript vulnerabilities (USN-3768-1)
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 9.24
Patch: 5b5536fa88a9e885032bc0df3852c3439399a5c0

Timelineinfo

08/24/2018 🔍
09/05/2018 +11 days 🔍
09/05/2018 +0 days 🔍
09/05/2018 +0 days 🔍
09/06/2018 +1 days 🔍
09/06/2018 +0 days 🔍
09/19/2018 +13 days 🔍
09/19/2018 +0 days 🔍
05/07/2023 +1691 days 🔍

Sourcesinfo

Vendor: artifex.com

Advisory: USN-3768-1
Researcher: Tavis Ormandy
Status: Confirmed

CVE: CVE-2018-16543 (🔍)
OVAL: 🔍

SecurityFocus: 105337 - Ghostscript 'psi/interp.c' Remote Memory Corruption Vulnerability

See also: 🔍

Entryinfo

Created: 09/06/2018 14:14
Updated: 05/07/2023 10:08
Changes: 09/06/2018 14:14 (77), 03/20/2020 21:40 (5), 05/07/2023 10:08 (6)
Complete: 🔍

Discussion

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