Artifex Ghostscript GhostXPS 9.22 xps/xpsfont.c xps_load_sfnt_name memory corruption

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

Summaryinfo

A vulnerability classified as critical has been found in Artifex Ghostscript GhostXPS 9.22. This issue affects the function xps_load_sfnt_name of the file xps/xpsfont.c. The manipulation leads to memory corruption. This vulnerability is uniquely identified as CVE-2017-9618. Local access is required to approach this attack. No exploit exists. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Artifex Ghostscript GhostXPS 9.22 (Document Processing Software). This issue affects the function xps_load_sfnt_name of the file xps/xpsfont.c. 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:

The xps_load_sfnt_name function in xps/xpsfont.c in Artifex Ghostscript GhostXPS 9.22 allows remote attackers to cause a denial of service (buffer overflow and application crash) or possibly have unspecified other impact via a crafted document.

The bug was discovered 07/25/2017. The weakness was disclosed 07/26/2017 as confirmed git commit (GIT Repository). The advisory is shared at git.ghostscript.com. The identification of this vulnerability is CVE-2017-9618 since 06/14/2017. 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 are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 119132 (GLSA-201811-12 : GPL Ghostscript: Multiple vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.ghostscript.com. A possible mitigation has been published 2 years after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (119132) and SecurityFocus (BID 99993†). The entries VDB-104538, VDB-104539 and VDB-104543 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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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: Memory corruption
CWE: CWE-119
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: 119132
Nessus Name: GLSA-201811-12 : GPL Ghostscript: Multiple vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703397
OpenVAS Name: Fedora Update for ghostscript FEDORA-2017-c9b0c406b3
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: 3c2aebbedd37fab054e80f2e315de07d7e9b5bdb

Timelineinfo

06/14/2017 🔍
07/25/2017 +41 days 🔍
07/26/2017 +1 days 🔍
07/26/2017 +0 days 🔍
07/26/2017 +0 days 🔍
07/27/2017 +1 days 🔍
11/24/2018 +485 days 🔍
11/26/2018 +2 days 🔍
12/14/2022 +1479 days 🔍

Sourcesinfo

Vendor: artifex.com

Advisory: git.ghostscript.com
Researcher: Kim Gwan Yeong
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-9618 (🔍)
GCVE (CVE): GCVE-0-2017-9618
GCVE (VulDB): GCVE-100-104537
SecurityFocus: 99993 - Ghostscript GhostXPS CVE-2017-9618 Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 07/27/2017 08:25
Updated: 12/14/2022 09:19
Changes: 07/27/2017 08:25 (73), 11/01/2019 15:25 (9), 01/06/2021 13:58 (2), 12/14/2022 09:19 (3)
Complete: 🔍
Cache ID: 216::103

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

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