Artifex Ghostscript up to 9.22 PostScript File 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 9.22 and classified as critical. Affected by this vulnerability is an unknown functionality of the component PostScript File Handler. The manipulation results in type conversion. This vulnerability was named CVE-2018-15909. The attack needs to be approached locally. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Artifex Ghostscript up to 9.22 (Document Processing Software). It has been classified as critical. Affected is an unknown code of the component PostScript File Handler. 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:

In Artifex Ghostscript 9.23 before 2018-08-24, a type confusion using the .shfill operator could be used by attackers able to supply crafted PostScript files to crash the interpreter or potentially execute code.

The bug was discovered 08/24/2018. The weakness was presented 08/27/2018 (Website). The advisory is shared for download at git.ghostscript.com. This vulnerability is traded as CVE-2018-15909 since 08/27/2018. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 3 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 237067 (Red Hat Update for ghostscript (RHSA-2018:3650)).

Upgrading to version 9.23 eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (117487) and SecurityFocus (BID 105178†). See VDB-116568, VDB-118612, VDB-123287 and VDB-123289 for similar entries. 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: 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 9.23
Patch: 0b6cd1918e1ec4ffd087400a754a845180a4522b

Timelineinfo

08/24/2018 🔍
08/27/2018 +2 days 🔍
08/27/2018 +0 days 🔍
08/27/2018 +0 days 🔍
08/28/2018 +1 days 🔍
08/28/2018 +0 days 🔍
09/13/2018 +16 days 🔍
09/14/2018 +1 days 🔍
05/04/2023 +1693 days 🔍

Sourcesinfo

Vendor: artifex.com

Advisory: RHSA-2018:3650
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-15909 (🔍)
GCVE (CVE): GCVE-0-2018-15909
GCVE (VulDB): GCVE-100-123288
SecurityFocus: 105178 - Ghostscript 'shading_param' Remote Code Execution Vulnerability

See also: 🔍

Entryinfo

Created: 08/28/2018 06:36
Updated: 05/04/2023 17:22
Changes: 08/28/2018 06:36 (77), 03/18/2020 15:37 (5), 05/04/2023 17:22 (6)
Complete: 🔍
Cache ID: 216::103

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