Artifex Ghostscript up to 9.22 PostScript File LockDistillerParams 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. It has been classified as critical. Affected by this issue is some unknown functionality of the component PostScript File Handler. This manipulation of the argument LockDistillerParams as part of Parameter causes type conversion. The identification of this vulnerability is CVE-2018-15910. The attack can only be executed locally. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Artifex Ghostscript up to 9.22 (Document Processing Software). It has been declared as critical. Affected by this vulnerability is an unknown code block of the component PostScript File Handler. The manipulation of the argument LockDistillerParams as part of a Parameter leads to a type conversion vulnerability. The CWE definition for the vulnerability is CWE-704. The product does not correctly convert an object, resource, or structure from one type to a different type. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In Artifex Ghostscript 9.23 before 2018-08-23, attackers able to supply crafted PostScript files could use a type confusion in the LockDistillerParams parameter to crash the interpreter or execute code.

The bug was discovered 08/24/2018. The weakness was shared 08/27/2018 by Tavis Ormandy (Website). The advisory is shared at git.ghostscript.com. This vulnerability is known as CVE-2018-15910 since 08/27/2018. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is 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 256499 (CentOS Security Update for ghostscript (CESA-2018:2918)).

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 105122†). The entries VDB-116568, VDB-118612, VDB-123287 and VDB-123288 are related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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: c3476dde7743761a4e1d39a631716199b696b880

Timelineinfo

08/21/2018 🔍
08/24/2018 +3 days 🔍
08/27/2018 +2 days 🔍
08/27/2018 +0 days 🔍
08/27/2018 +0 days 🔍
08/28/2018 +1 days 🔍
09/13/2018 +16 days 🔍
09/14/2018 +1 days 🔍
05/04/2023 +1693 days 🔍

Sourcesinfo

Vendor: artifex.com

Advisory: RHSA-2018:2918
Researcher: Tavis Ormandy
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-15910 (🔍)
GCVE (CVE): GCVE-0-2018-15910
GCVE (VulDB): GCVE-100-123289

OVAL: 🔍

SecurityFocus: 105122 - Ghostscript Multiple Security Bypass Vulnerabilities

See also: 🔍

Entryinfo

Created: 08/28/2018 06:36
Updated: 05/04/2023 17:30
Changes: 08/28/2018 06:36 (80), 03/18/2020 15:41 (6), 05/04/2023 17:30 (6)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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