Artifex Ghostscript up to 9.23 Interpreter type conversion

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Artifex Ghostscript up to 9.23. It has been classified as critical. Affected by this issue is some unknown functionality of the component Interpreter. Performing a manipulation results in type conversion. This vulnerability is reported as CVE-2018-16511. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical has been found in Artifex Ghostscript up to 9.23 (Document Processing Software). This affects an unknown code block of the component Interpreter. 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. The summary by CVE is:

An issue was discovered in Artifex Ghostscript before 9.24. A type confusion in "ztype" could be used by remote attackers able to supply crafted PostScript to crash the interpreter or possibly have unspecified other impact.

The bug was discovered 08/24/2018. The weakness was disclosed 09/05/2018 (Website). The advisory is shared at git.ghostscript.com. This vulnerability is uniquely identified as CVE-2018-16511 since 09/04/2018. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

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 117487 (Debian DLA-1504-1 : 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 171670 (SUSE Enterprise Linux Security Update for ghostscript-library (SUSE-SU-2018:3330-1)).

Upgrading to version 9.24 eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (117487) and SecurityFocus (BID 105178†). The entries VDB-104535, VDB-116568, VDB-118612 and VDB-123287 are pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
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: 117487
Nessus Name: Debian DLA-1504-1 : 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 9.24
Patch: 0edd3d6c634a577db261615a9dc2719bca7f6e01

Timelineinfo

08/24/2018 🔍
08/28/2018 +4 days 🔍
09/04/2018 +6 days 🔍
09/05/2018 +1 days 🔍
09/05/2018 +0 days 🔍
09/05/2018 +0 days 🔍
09/13/2018 +8 days 🔍
09/14/2018 +1 days 🔍
05/07/2023 +1696 days 🔍

Sourcesinfo

Vendor: artifex.com

Advisory: RHSA-2018:3650
Status: Confirmed

CVE: CVE-2018-16511 (🔍)
GCVE (CVE): GCVE-0-2018-16511
GCVE (VulDB): GCVE-100-123597

OVAL: 🔍

SecurityFocus: 105178 - Ghostscript 'shading_param' Remote Code Execution Vulnerability

See also: 🔍

Entryinfo

Created: 09/05/2018 14:36
Updated: 05/07/2023 09:11
Changes: 09/05/2018 14:36 (78), 03/20/2020 16:56 (4), 05/07/2023 09:11 (6)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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